Killing 176 people on board. And that has led to antigovernment protests and the unrest is spreading. Authorities say shooting the plane was a mistake and they have apologized. But protesters are demanding those responsible be brought to justice. Police have responded to the protests with tear gas and a witness says they even shot into the air in an effort to disperse crowds. Cnns Nic Robertson has more now from abu dhabi. Reporter chants of death to the Supreme Leader, angry blowback for the downing of ukrainian passenger jet gathering momentum in teheran. Thousands protesting just hours after iranian officials finally admitted mistakenly shooting it down. I will kill who killed my brother someone shouts. The vast majority aboard flight ps 752 were iranian, the best and the brightest. Their death a spark igniting tinder dry middle class frustrations. Police tossed tear gas, scattered the crowds. The anger quite simply Supreme LeaderAyatollah Ali Khamenei doesnt care about his people. He didnt pause civilian flights while attacking u. S. Bases in iraq. The crowd telling him he no longer has a mandate to lead, anger to the powerful irgc. Another slap down for the irans leadership. Protesters avoid walking on american and israeli flags painted on the ground some years ago by the regime out of disrespect. Irans leadership now facing growing external as well as internal pressure. Irans admission that its own armed forces unintentionally shot down flight 752 is an important step towards providing answers for families. But i noted that many more steps must be taken. Reporter demands the airplane investigation be international, open and transparent. President trump heaping on his pressure, too, tweeting, the world is watching the protests. There cannot be another massacre of Peaceful Protesters as happened last year. And in the midst of it all, the British Ambassador arrested at the protests held for several hours. The British Foreign secretary calling it a flagrant violation of international law. Fallout over the downed plane now becoming a perfect storm for iran in the global spotlight with International Investigators poking around as domestic protests grow and sanctions increase and irans recourse to violence muted by fear of escalation. And still no real diplomatic off ramp in sight. Nic robertson, cnn, abu dhabi, the u. A. E. And that passenger plane was shot down after the u. S. Killed iranian general Qassem Soleimani in iraq. And now a new abc news poll shows a majority of americans, 56 , do not approve of the way President Trump is handling iran. People were also asked if they thought the airstrike that killed soleimani has made the u. S. Safer. 52 say the u. S. Is now less safe. Only a quarter of those surveyed said they felt safer. The justification for why the Trump Administration decided to target irans top general keeps shifting. Mr. Trump has said he believes that soleimani was planning to target four u. S. Embassies. But his administration has yet to provide evidence to back up those claims. Defense secretary mark esper was grilled on that when he appeared on various networks, including this one. Take a listen. Was there specific intelligence the iranians were plotting to target four u. S. Embassies . There was intelligence that they there was an intent to target u. S. Embassy in baghdad. What the president said with regard to the four embassies is what i believe as well. He said he believed that they probably that they could have been targeting the embassies in the region the president didnt say it was a tangible he didnt cite a specific piece of evidence. What he said is he probably he believed are you saying there wasnt one . I didnt see one. And cnn White House CorrespondentJeremy Diamond has more on these mixed messages. Reporter well, just days after President Trump claimed there was an imminent threat against four u. S. Embassies by iran that precipitated his order to kill the iranian general Qassem Soleimani, the Trump Administration still struggling to get its messaging together. In fact, it appears the Trump Administrations message is only getting more muddled. Trump Administration Officials struggling to explain exactly what this intelligence was that the president was referring to. In fact, the secretary of defense, mark esper and the National Security advisor, archipelago roberto brian, both of them trying at the same time to stick to the intelligence that the United States actually knows about while trying to avoid contradicting the president. Here is ambassador obrien trying to do that delicate dance. Would you agree with what the president said, that there were specific imminent threats to four u. S. Embassies . Look, its always difficult even with the exquisite intelligence we have to know exactly what the targets are. But it, it, its certainly consistent with the intelligence to assume they would hit embassies in four countries. But again, we knew there were threats to american facilities. Whether they were bases, embassies, its always hard until the attack happens, but we had very strong intelligence they were looking to skill and maim americans at u. S. Facilities in the region. Reporter and you hear obrien there using the word assume. Thats what he and esper were focusing on, the president wasnt necessarily talking about specific intelligence threatening four embassies, but was instead drawing an assumption, drawing a conclusion based on intelligence that he had seen and that it was his, quoteunquote, belief that those four embassies were indeed being targeted. Again, this just makes the adds Morgan Stanleys arguments particularly in the face of tough questions from congress. That much more difficult to understand. That is, of course, the Trump Administration said there was an imminent threat that led to the justification for President Trump ordering the killing of that iranian general. This, again, isnt just about transparency and isnt about understanding what trump was doing here. It in in fact is a legal justification and that argument seems to be getting more muddled. Jeremy diamond, cnn, the white house. And for more on this, Richard Johnson joins me now via skype from lancaster in england. He is a lecturer in u. S. Politics at lancaster university. Good to have you with us. Good morning. So, according to an abc news poll released sunday, a majority of americans disapprove of President Trumps handling of iran. They may feel less safe as a result of the killing of irans top general. Why a top tru why are top Trump Officials having trouble explaining why soleimani was killed with the muddled explanation . Its hard to speculate on the intelligence the administration does or doesnt have. Its important for them, both politically and constitutionally to try to establish there was an imminent threat because if killing soleimani is interpreted as an act of war, under the Constitution Congress is required to give consent to any declaration of war. But the president is understood constitutionally to be able to act if there is imminent threat against the United States. And so thats why they are emphasizing this so strongly. At the end of the day, the enforcement mechanism for for whether or not the president has behaved constitutionally is congress. Congress is already going through an impeachment process, but if they did feel strongly the president hadnt acted against imminent threat, they could, of course, take action against the president through another impeachment process if they wanted to. All right. Well watch to see whether they can get their story straight on this. In the meebt, impeachment, we will learn when democrats plan to send articles to the senate for trial. What do you think will be the likely outcome of all this . What Nancy Pelosis done in holding back the articles as long as she has is really been an attempt to try and buy time, and thats because if there is a majority in the senate sort of favorable to where the democrats procedural preferences are, they can really take control of the process. And there are a small number of republican senators who seem to be amenable to the democrats taking control of the process. Most importantly, being able to bring witnesses. I think nancy pelosi has now concluded that she has got as much republican support as she can. Maybe three republican senators which may or may not be enough for them to take control of the process if they wanted to at a later stage, say, to bring witnesses into the trial. All right. Richard johnson, many thanks for joining us. Appreciate it. Thank you. Well, american firefighters are stepping up to help tackle australias massive bush fires. But the fight is much bigger than they thought. Have you ever seen anything at this magnitude . No. We have large fires, of course, in the United States and all over the world, but this is unprecedented. And we will have more on their mission when we come back. How do we make a scented oil plugin that doesnt smell fake . Start with the essence of nature air wick scented oils are infused. With essential oils that are 100 natural. To fill every corner with the fragrance of nature. Air wick. Nearly half a Million People are being evacuated in the philippines after this powerful eruption from the taal taal volcano on sunday. You can see smoke and ash spewing nearly 9 miles high. Officials have now raised the alert level to 4, meaning another explosive eruption could be coming soon. More now from cnn meteorologist tom sater. Reporter a violent eruption near the philippine capital filmed from the crater, images taken in 5minute interval capture the speed and strength of the explosion before the camera is consumed. Hours later strikes of lightning shoot through the dark sky generated by the taal volcanos intense energy. As the powerful eruption continues, it spews a column of ash up to 15 kilometers into the air, spreading across the sky. Visible from afar, one passenger captures this image from a plane approaching manila where the airport suspended arrivals and departures. The taal volcanos ominous cloud rains down ash, coating cars and homes below. Some protect themselves with umbrellas and bags, trying to escape the Health Dangers of the volcanic ash. Thousands are being evacuated. They warn the situation could worsen. A cause for concern to about 25 Million People who live within 100 kilometers of the taal volcano. As authorities try to prepare for the fallout, they face a vo lca no with a volatile past. Taal is the most dangerous. Situated inside a lake, it sits among what is known as the ring of fire. It has erupted more than 30 times in the past century. Once killing more than a thousand people in 1911. Now the powerful force of nature erupts once again. Tom sater, cnn. Lets go to our meteorologist Pedram Javaheri who has been watching this very closely. Pedram, the big concern now, this possible second eruption. What are you learning . Yeah, the latest coming in here with this particular vo lca no, this is going to be an active pattern the next couple of days. We see the plume. We know an eruption of this magnitude, and also what is known as a free erratic eruption, you have a volcano it in the middle of a lake, an island. The proximity to water makes it dangerous. Magna, and rocks coming out of this particular eruption exceeding 1100 degrees celsius. What is happening here we are seeing additional further eruptions coming in that are also interacting with the water, creating essentially the rapid steam across this particular region. So you get flash steam that is generated, essentially looks as such here, you see a photo from an aircraft. Of course, not only do we have ash here that has small compounds of glass and rock embedded within it, but, of course, larger rocks the size of boulders have been lofted into the atmosphere and surrounding vicinity. Officials saying stay far away from the particular region. Level 4 stays in place. One shy away what would be considered a major eruption. Level 5, of course, a catastrophic set up. We know historically speaking, 34 significant eruptions have occurred in the past several hundred years. We had one in 1754 that continued over a sixmonth period. The one in 1911 took 1300 lives. You notice once it did erupt in subsequent years, it continued over a course of multiple years. 1966, 67 and again in 68. So i wouldnt be surprised we get additional volcano eruptions over the next several weeks, several months, maybe further intensification inside the next several months as well. Well watch that carefully, also noting 75 earthquakes have occurred here in the past 24 hours as a result of the eruption leading up to it. Of course, since the eruption as well. Well watch the patterns carefully. We know the rain is in the forecast mik forecast mixing rain with volcanic ash. They call it home which is not good. The compounds are so small they get into your bloodstream and becomes dangerous for the population here. It is a big concern for sure. Thanks so much for keeping a close eye on that, pedram. Well take later. Even with the volcano erupting nearby, one couple with determined to go forward with their wedding as smoke filled the air and ash rained down. The ceremony pushed down. While the photographer said it was nerveracking, everyone kept their cool. They have some amazing wedding photos to show everyone in the years ahead. Well, a new poll shows the australian prime ministers Approval Rating has dropped over his botched response to the countrys bush fire crisis. The poll found Scott MorrisonsApproval Rating dropped 8 points as australians are upset and they are angry over his interactions with fireravaged communities and inaction over climate change. Meanwhile, cnns will ripley spoke to american firefighters who were there to help. Reporter hovering over australias hellish inferno, this american angel, a 52yearold heavy lift helicopter nicknamed georgia beach. Built in 1967 for the vietnam war, today it battles bush fires, dousing them with enough water to fill three large swimming pools every hour. But in new south wales, australias hardesthit state, these helicopters sit idle, giving american firefighters who came here to help a rare day off. Todays weather is not allowing you to fly. Is that a good thing or bad thing . Its a good thing. Reporter why . We cant compete with mother navy. Reporter firefighter jay carl says rain, lower temperatures and higher humidity are slowing the fires progress. What this will do is kind of put the fire in a sort of comatose state for a few days. Reporter nature can do more for the fire. Than we can, yeah. Reporter he knows that break may be short lived. Recent rains barely made a dent in australias historic drought. Just a few days of extreme heat could be catastrophic, reigniting a burn area the size of massachusetts, connecticut and rhode island combined. Is there any way to have enough resources to fight a fire this big . Not of this magnitude and intensity. Reporter for the first time superintendent Mark Williams takes us inside naras fire control center. We see australians and americans working together. The two nations have agreed to share fire resources. Ive been to the United States and canada on numerous occasions myself fire fighting, so its great to have that reciprocal effort now coming to assist us in our times of need. Reporter more than 150 fire specialists from two dozen u. S. States are in australia, some traveling more than 16 hours. These americans got a heroes welcome when they landed in sydney last week. Even the citys iconic opera house lit up its sails for all the firefighters risking their lives. It felt really good. I was very proud to be able to come over here and help. Reporter Bart Kicklighter from oregon says the two nations are sharing manpower and brain power at a critical time. Have you ever seen anything at this magnitude . No. We have large fires, of course, in the United States and all over the world, but this is just unprecedented. Reporter hes never seen a fire so fast, so big, so hot, an ominous sign of what could lie ahead, not just for australia, but the u. S. And the world. Will ripley, cnn, nalra, australia. Britains royal family will gather in the coming hours to discuss the next steps for prince harry and his wife meghan. The couple took Buckingham Palace by surprise announcing they were stepping back. The as senior members of the royal family. They plan to divide their time between north america and the United Kingdom and become financially independent. There are Unanswered Questions about how this will work. Anna stewart joins us now from lone with the details. So, anna, the royal family sitting down in just a few hours to discuss these possible compromises. Whats likely to be worked out and decided . Reporter it is absolutely unclear whether well get an agreement or an impasse as a result of the sandringham summit. Its been eerily quiet since the shock announcement last wednesday and the very curt response from Buckingham Palace. Its been quiet ever since then while the royals get together on the phone to figure out how they can move forward. Heres a little preview of what will happen today. The queens sandringham estate, a retreat and the familys get away. The family will get