1am in london and 2am in the german city of hamburg, where riot police have clashed with demonstrators as world leaders gather for the g20 summit of leading economies. although it's not officially started, president trump has already grabbed the spotlight. speaking in poland just before the summit, he's said western civilization needs to defend itself. and ahead of his meeting with president putin, he's called on russia to stop destabilising other countries. jon sopel reports from hamburg. the famous port of hamburg, tonight a disembarkation point for anarchists, anti—capitalists, anti—globalisation protesters and the leaders of the world's 20 richest nations. the protesters‘ stones and fireworks were met by police teargas water cannon. no such hostility when the president ventured out in warsaw this morning. not everywhere in europe would they chant donald trump's name so loudly or so approvingly. but with its populist anti—immigration government, this was politically the ideal place to come. and by dint of poland's history and geography, the perfect location too to deliver a message about the challenges facing the west. the fundamental question of our time is whether the west has the will to survive. do we have the confidence in our values to defend them at any cost? do we have enough respect for our citizens to protect our borders? do we have the desire and the courage to preserve our civilisation in the face of those who would subvert and destroy it? in the 1940s, the threat was nazism. this sculpture commemorating those who died in the warsaw uprising, the backdrop on which the president delivered his speech. today he identified the threat as islamist extremism, but he had another target in his sights too. we urge russia to cease its destabilising activities in ukraine and elsewhere and its support for hostile regimes, including syria and iran, and to instead join the community of responsible nations in ourfight against common enemies and in defence of civilisation itself. that's the most outspoken he has been about russia and it comes on the eve of his eagerly anticipated first meeting with vladimir putin. but on moscow's interference in last november's us presidential election, something his intelligence services say is fact, the president again equivocated. it could very well have been russia, but it could have been other countries and i won't be specific. but i think a lot of people interfere. it's been happening for a long—time, for many years. one other thing that came out was the clear commitment to nato‘s article five, that the attack on one nation is an attack on all. a welcome announcement for all those anxious countries on russia's western border. then onto germany and what promises to be at testing summit, with disagreements over trade, immigration and climate change. angela merkel and donald trump met this evening and they disagree on much of this. the joint communique will be a test of the bureaucrat‘s drafting skills. we saw at the beginning ofjon sopel‘s report the protest there. there they are. that is what i tried to get to. these demonstrators are all clashing ahead of the g20 summit. police intervened when, according to them, about 1,000 demonstrators dressed in black refused to remove their masks. officers used water cannon and pepper spray, while demonstrators threw bottles and other missiles. jenny hill was there. police have dispersed protesters here. it all began rather peacefully this afternoon. some 5000 or so people demonstrated in square. suddenly, it turned very ugly as police in riot gear turned on the crowd. —— a square. there have been missiles thrown in police have been using water cannon. they are trying, gradually, to remove the remaining protesters further down the road. at one stage, police were telling people inside what was a sort of cattle to remove balaclavas. wearing thoseis cattle to remove balaclavas. wearing those is illegal here in germany. —— kettle. police are moving towards a stranger clear the demonstrators. it will not be easy, because they have made it clear they are not going anywhere. as far as they are concerned, the streets of hamburger theirs, and they want to take them back. —— hamburg are theirs. earlier, in a speech in poland, donald trump also talked about the tensions with north korea. there have been celebrations in pyongyang after the successful launch of a missile capable of reaching the united states. president trump said he was considering what he called a very severe response, and that there would be consequences for what he called north korea's "very, very bad behaviour". we will just take we willjust take a look at we will just take a look at what happens over the coming weeks and months with respect to north korea will stop it is a shame that they are behaving this way, but they are behaving in a very, very dangerous manner, and something will have to be done about it. in other news: , a 6.5 magnitude earthquake has killed at least two people in central philippines. —— in other news: a 6.5 magnitude. more than 100 others were injured on the island of leyte. thousands fled from their homes, and many refused to return because of aftershocks. the us geological survey said the quake hit at a depth of around six kilometres. these are just some of the scenes of destruction caused in asakura as torrential rains battered south western japan. three people are known to have been killed and others are stranded in their homes after being cut off by floods and landslides. the rain's expected to continue on friday. the chinese hospital treating imprisoned nobel peace laureate, liu xiaobo, says his condition has worsened. the dissident was diagnosed with late—stage liver cancer in may, and friends say they fear he only has a few days left to live. he was imprisoned in 2009 on charges of inciting subversion against the state after he helped to write a petition calling for political reform in china. let's bring you up to date with all the tennis news. there's been a huge shock at wimbledon, where third seed karolina pliskova was knocked out after losing in three sets to world number 87, magdalena rybarikova. the czech was beaten 6—3, 5—7, 2—6, and is the highest—ranked player to exit the women's draw. and finally, he is an animal that has made a very big impression. and you can see why, rather cute. this female baby pygmy hippopotamus has just been introduced to the public at chile's buin zoo. it's two weeks old and currently weighs in at 14 kilos. when she reaches the age of eight months the baby will be separated from her mum and sent to another zoo for breeding. but as you can see, the crowd is absolutely but as you can see, the crowd is a bsolutely love but as you can see, the crowd is absolutely love seeing her. let's face it, she is incredibly cute. so why not? more on the g20 now, and the world is entering a dangerous phase — that's according to the former prime minister of australia, who helped to shape the g20 into the summit that it is today. i spoke to him earlier. i think there are two levels of risk at present. one is a too political risk, and we see of course what is unfolding in the korean peninsula, with a new environment with the testing, for the first time, then icbm. secondly, in us— russia relations, there is an increasing incidence of russian and us military aircraft having near misses or near incidents, either in the baltic or in the middle east. thirdly, uncertain trajectories again from a different source of tension in the middle east. finally, it into your economics, we have deep pressures that now exist on the future of free trade. —— geoeconomics. if we have tariff action and counter tariff action, that spells bad news for growth and jobs. that is a long list that you have given us. we know that north korea is the most immediate threat. there appear to be no solutions in the us, china, or the security council. so what do you suggest, as a former leader, be done about it? on north korea, much of the influence lies of course in beijing. what can china do to cause the north korean nuclear programme to change course? really, there are two things that the chinese can do. they will cause kim jong—un's leadership to sit up and take notice. one is turn off china as a source of international convertible currency for the regime to use on global markets to buy what they need. but the second is to turn off oi’ need. but the second is to turn off or reduce the supply of oil, because without oil, the economy will grind toa without oil, the economy will grind to a halt, and the military, as well. that is what china can do. and think diplomatic action between the chinese and the us now lies there. earlier, i spoke to nearly of policy expert in washington. i asked her if she thought north korea really had a missile capable of carrying out a large nuclear warhead. —— carrying a large nuclear warhead. —— carrying a large nuclear war could. that remains to be seen. that is what the north koreans are saying said. —— geoeconomics. —— are saying. but they will get to a point where they can manage rosa warhead and put it ona can manage rosa warhead and put it on a ballistic missile catalogue of bridging the american homeland. -- capable of. we heard donald trump with the polish president. he said he will take strong action. what can he will take strong action. what can he do? again, that also... we are dealing with donald trump. he is there anyone that has that ants. but there anyone that has that ants. but the concern right now coming from a statement like that really concerns police makers overseas —— he is clearly one that has the answer. —— but it is a concern right now coming from a step like that really can turn is —— really concerns policy makers overseas. president trump really will need to have two make a political decision very soon on how to deal with north korea or else he will be faced with a very tough decision going forward. so you are concerned that there is concern of the way that he handled the situation with syria. but in terms of him talking to the chinese are getting on board, that is not really working out for him at all, is it? it is not. and we should not expect china to solve the problem the north korean nuclear problem poses for us. it has its own strategic efforts. china knows that it has economic leveraged that it can pull. beijing is always worried about a potential collapse, but they also know how tightly to tighten the screws, just enough so that the north does not collapse, but beijing is choosing not to go that route, and is choosing not to punish the north to the extent that we would like ageing to do so. however, we can expect to see beijing punish the northjust enough so that pyongyang can endure it, but not an extent that would like. also on the programme: back to the golden age of air travel, this restaurant is recreating the experience of flying pan america in the 1970s. also on the programme: it's normally the preserve of women but this man has become a professional belly dancer in india. central london has been rocked by a series of terrorist attacks. police say there have been many casualties, and there is growing speculation that al-qaeda was responsible. germany we will be the hosts of the 2006 football world cup. they pipped south africa by a single vote. in south africa, the possibility of losing hadn't even been contemplated, celebration parties planned in all the big cities were cancelled. the man entered the palace through a downstairs window and made his way to the queen's private bedroom. then he asked her for a cigarette, and on the pretext of arranging for some to be brought, she summoned a footman on duty, who took the man away. one child, one teacher, one book and one pen can change the world. education is the only solution. this is newsday on the bbc. i'm sharanjit leyl in singapore. i'm kasia madera in london. our top stories: police in germany have clashed with protestors as world leaders gather in hamburg ahead of the g20 summit. and, as north korea celebrates its latest missile launch, president trump has said he's considering a very severe response. let's take a look at some front pages from around the world. the china daily turns its attention to the north korean missile crisis. it highlights how china's president xi is insisting on a peaceful resolution. and it points out that even south korea has praised beijing's handling of the crisis. the japan times focuses on what it calls the country's once—in—a—decade storm. as the rescue operation gets under way, it says the death toll and scale of destruction is likely to rise. and the business times reports on how china's bike sharing wars have spread to singapore. the paper says so many cycles have been deployed in singapore that local officials are running out of ways to keep them from littering the streets. china's aircraft carrier is about to dock in hong kong in what is being seen as a show of force to its rivals in the contested south china sea. this is the live scene, where the soviet—made liaoning and its three accompanying warships will enter hong kong waters from the south. the carrier is to dock in the western anchorage and will stay for two days. earlier this week, 2,000 hong kongers queued for hours for tickets to board and visit the ship. our correspondentjuliana liu has more details. according to local media the liaoning and it's free —— according to local media the liaoning and its three accompanying warships have already entered hong kong waters. it's expected to docking ikm or so from the island, the carrier is too large and wide to enter hong kong island, the strip of water connecting hong kong island to the kowloon peninsula so it will be near the island, close to the international airport. the three warships will be nearby near stonecutters island, the location where the people's liberation army base is. according to hong kong media this will be the first time the general public will be able to get a close—up look at the carrier. it's been in service since 2012. thousands of people queued overnight forjust 2000 tickets. those tours expected to start tomorrow as well as sunday. today, though, there will be two vip receptions for local vips, and local media. they won't be allowed to take cameras but they can take mobile phones, and its possible arrangements will be made for them to take selfies or other photos when they're visiting the aircraft. we will look at social media to see photos up close of the carrier. european and japanese space chiefs have unveiled their next big challenge. it's a mission to the planet mercury — the planet closest to the sun. the orbiting craft will face temperatures as high as a50 celsius. and it it'll take seven years for it to actually get there. our science correspondent rebecca morelle has spent the day at the european space agency's test centre in the netherlands. a mysterious world, mercury is the smallest planet in our solar system, and the closest to the sun. covered in craters, towering cliffs and ancient volcanoes, until now, it has been little explored. a major new mission is set to change that. this is the spacecraft cold bepicolombo, named after a famous italian scientist. it has taken nearly a decade to build. it is only when you get up close that you really get a sense of the size of this huge piece of kit. and this is a spacecraft built to withstand extremes. to get to mercury, it has to travel towards the sun, and that means dealing with intense radiation and heat. on the surface of mercury, temperatures can reach a50 celsius, and that's hot enough to melt lead. its launch will take place next year. this is probably one of the most challenging missions we have ever undertaken. it's the long journey to get there and then we have to deal with heat when we get close to the the sun. but mercury is a tiny, enigmatic little world, which has so much to tell us about the formation of our solar system. bepicolombo's journey will take seven years, arriving at mercury in 2025. once it's there, the engine will be jettisoned, and two spacecraft will separate. they will work together to give us our best ever view. we'll see its features in incredible detail, and peer inside to solve the mystery of what lies at mercury's core. this is the instrument we built at the university of leicester... british scientists have developed x—ray cameras for this mission. we're going to be the first people on the planet to see this data coming back from mercury. we'll be the first people to see x—ray images of mercury's surface, which is going to tell us about what the surface is made of, and it's going to revolutionise our understanding. the spacecraft will soon be packed up, ready for its long journey. and while it will be sometime before we get the first results back, scientists say the will be worth it. rebecca morelle, bbc news, the netherlands. now, kasia, i don't know if you've ever tried belly dancing, it isn't really the thing here in singapore. i haven't, shara njt, but i do know you don't have to be a woman to do it. belly dancing may be a predominantly female art form, but that hasn't stopped one man in india from pursuing his passion. eshan hilal has been talking to us about the sacrifices he's had to make to become a professional dancer. belly dancing is something that is as good as, like, any other beautiful indian classical dance form. when it comes to your gender roles, when it comes to your individuality, when people talk about you're not man enough when you're doing dance, i refuse the statement of the people. i'm not on good talking terms with my father and even my siblings because they're kind of ashamed of me. there's a word i have always heard throughout my childhood, why you want to be a girl? i love dance, it doesn't mean i'm a girl. why are you seeing the belly part, why are you seeing that thing, why can't you seeing the grace of the artform? i feel existence when i'm dancing, you know? if you can't appreciate something, then don't demean that. not bad, is he? eshan hilal talking to us about his love of belly dancing. for a lot of people, air travel can be a bit of a chore. delays, queues, cramped conditions and food that often leaves a great deal to be desired. but once upon a time it was very different. travelling by air was exotic and exciting. now a restaurant in los angeles is trying to recreate that golden age, as the bbc‘s tim allman reports. ah, those were the days, luxury at 14,000 feet. ah, those were the days, luxury at 111,000 feet. businessmen in suit and tie, smiling stewardesses, a different age. now you can relive the pan am experience in la — a restau ra nt the pan am experience in la — a restaurant designed to look like an airline. i have a lot of vintage menus from my days, so i picked my favourite and i went to a caterer and got them to replicate the meal. that includes chicken and peppercorn sauce and a vegetarian option — this is 2017 after all. and the chance to buy duty—free. is 2017 after all. and the chance to buy duty-free. it is the most brilliant experience, it really is. people of my age — old — we lived this, you know, we went through this. and it is gone. the airlines don't know what they used to do, pan am was the best and they always created the very best service. to operate the x0 doors, simply pushed the door open. -- xo doors. mile high entertainment so to speak at ground level, but it isn't cheap —— exit doors. at their first—class tickets will set you back nearly $700 and when you get out you haven't travelled an inch. my my goodness. that sounds like quite a lot, what do you think? thank you. it was a very warm day on thursday across england and wales, in particular southern and south—eastern areas, with a top temperature in london of 32 celsius. in fact, a number of stations in the greater london area saw 32 degrees and it was pretty hot as well further north, but the heat across northern england broke down in spectacular style with some severe thunderstorms, we had reports of flash flooding and also some lightning damage across yorkshire and into lincolnshire. now, those thunderstorms will continue to rattle away off into the north sea, and then for most places it should be a dry end to the night. thicker cloud and outbreaks of rain, though, pushing into northern ireland and western scotland, it's going to be a very warm and muggy start to the day once again across the south, particularly the south—east. only a little bit of cloud around for the south—west of england, into western wales, but a good deal sunshine for the midlands eastwards and look at those temperatures to start the day, around 20 degrees. further north and there will be thicker cloud. for north—west england into scotland and northern ireland, like i mentioned, there will be some light and patchy rain around so a dismal morning with temperatures here at 8am around the mid—teens celsius. through the day it looks like that cloud across western areas will tend to move in eastwards and any clear skies tending to infill from cloud, so a cloudier afternoon that what we saw on thursday, so that means not quite as hot. still very warm, though, in the south—east with 27 or 28 degrees. a rather low 20 further north and high—teens celsius in scotland and northern ireland. it means for the tennis at wimbledon on friday that it will be a bit more comfortable for the spectators and for the players with highs around 26 or 27 celsius and sunshine coming and going. a fine end to the day on friday, but we look to the west to this area of rain, which will push in towards wales, light and patchy and will affect mainly western areas. this weather front is responsible for it. as we head on in towards saturday it will bring a cloudy, damp day to central areas, northern ireland, through northern wales and into northern england, the rain not amounting to that much. to the north of it, largely dry with sunshine and there will be sunshine across southern areas, but generally speaking a cloudy day and a cooler one across the board. top temperatures 2a degrees. looks like temperatures rise a bit again as we head on towards sunday and that's because we pick up some thundery air again off the near continent, this area of low pressure could introduce some heavy showers to southern parts of the country, maybe the odd thunderstorm, and this weather front brings outbreaks of rain to scotland and northern ireland. but in between a slice of drier and brighter weather and again quite warm in the south—east. i'm kasia madera with bbc world news. our top stories: police in germany have clashed with protestors as world leaders gather in hamburg ahead of the g20 summit. climate change and global terrorism will be the major issues on the agenda. in a speech on his arrival in europe, the us president donald trump called on western civilisation to stand united against what he called the "menace" of radical islamic extremism. north korea has been celebrating its latest missile launch. but president trump says he's considering a very severe response against the regime in pyongyang. and this video is trending on bbc.com. it's a little animal that's started making a pretty big impression. this female baby pygmy hippopotamus has just been introduced to the public at chile's buin zoo. it's two weeks old and currently weighs in at 1a kilos. that's all from me for now. stay with bbc news. and the top story here in the uk: