Here in the United States. And of course, all around the world. Im Rosemary Church at cnn. And im Michael Holmes in the belgian capital. This is cnn newsroom. We will bring you all of the latest from brussels in a moment. But first, christians deliberately targeted on their holiest day. And a promise from militants that more violence will come. A Splinter Group from the Pakistani Taliban is claiming responsibility for a suicide bombing that killed at least 69 people. The explosion happened at a crowded park in lahore, where families were celebrating Easter Sunday. Many of the victims were women and children. More than 400 people are wounded. Ravi is following the developments and joins us with the latest. People across lahore, trying to come to terms with this tragic and deadly attack. What more are we learning about what happened and the group claiming responsibility for this . Thats right, rosemary. This took place on sunday evening. It was a playground. And it took place near some childrens swings were hearing from eyewitnesss that are there. Real devastation from lahore. Lahore, is the capital of the state of punjab. And the state of punjab is where 60 of pakistans population resides. This is the side of pakistan that receives terror attacks less frequently than other parts of pakistan in the northwest. This is unusual, to some extent, attack. And really, a message from the Splinter Group of the Pakistani Taliban, that has claimed responsibility. It is a message from them to the pakistani government saying, we can attack you anywhere. We can attack you in the heart of the punjab. In the city of lahore. Thats the city that pakistans Prime Minister is from. And his younger brother, the chief minister of the state of punjab. Really, this is an attack that has jolted the government. It was a large explosion that was heard for kilometers away. How does the Pakistan Government plan to respond to this attack . And what are they doing to try to protect people from the threat of more attacks . Is that even possible . What we heard from eyewitnesses on sunday, is there was little security at the pack where the explosion took place. It would have been easy for a suicide bomber to walk in and detonate. There was less security on sunday. The Prime Minister has said he is looking into what can be done. No specific measures have been named so far. He held an emergency meeting with his top ministers on sunday evening, as did the army general, no relation to the Prime Minister. He said that they will look into going after this particular group. But i should add that pakistans war, this form of terror, has been continuing for many years. And this is one of a spate of attacks in recent months, and recent years. This particular one by this particular group is brutal. And its made a name for itself, by not flinching, going after minority groups, and going after women and children. And particularly brutal. Monday morning, still in the city of lahore, people are waking up to the news. They are still scouring hospitals and searching for loved ones. Youve seen the pictures on your screen. Real scenes of devastation in pakistan today. The details are horrifying. Raviing gagrawal, many thanks t you. Belgian police have been active in and around the capital. They carried out 13 raids sunday and questioned a number of individuals, four of whom are still in custody. Was of now, its not clear if theyve led to new leads. Our Michael Holmes is following all of the latest developments. He joins us live from brussels. Michael, whats the scene there after the weekend protests . Yes. Rosemary, its just after 8 00 a. M. , of course, here in brussels. It is a very cold and blustery day. It is a public holiday. And the scene behind me in the place dela bourse is quiet. Weve seen people come by this memorial to honor the dead and the wounded from these terror attacks. As you say, after the protests yesterday, by this group of nationalists, who came in and really disresulted and disrespected the scene behind me, this memorial, we hope theres no repeat of that. But as we saw yesterday, police did step in and sort that out pretty quickly. But it was a very disturbing scene. It really is quite windy here today. That might keep the crowds down. Meanwhile, brussels remains tense, it has to be said, in the aftermath of the terror attacks, that left 28 people dead on tuesday. Police carrying out raids in and around the city, all sunday, as you said. There were a total of 13 operations, resulted in nine more people being deined. Only four of them remain in custody. And thats been a real patent that weve seen. Theyll pick up several people and release a few of them. But they always keep someone. Theres been quite a few in detention. And several have been charged with various offenses. Including in one case, terrorist murder. Outside of the country, the rest of europe, also actively engaged in terror measures of their own. Dutch police, we can tell you, arrested a man in rotterdam. That was at the request of french authorities. That man suspected of plotting an impending attack on france. He is expected to be extradited in the coming days. Thats a day after Italian Police arrested an Algerian National with ties to the last attack on france, novembers assault on paris. More coming to light on a daily basis. That raises concerns about the scope of a possible Terror Network right throughout europe. Now, here in brussels, the fear is palpable. Theres a lot of anxiety with a lot of people on the loose. And its manifesting itself in some ugly ways. Just behind me, at the place dela bourse, those mourning sunday only to find them in onehalf of the city divided. Hundreds of belligerent protesters storming the memorial, shouting antiimmigrant slogans. Phil black was in the middle of it. Saw it all firsthand. Reporter this is what the place de la bourse has looked like since the days of the attack. Large crowds, honoring the victims. Sometimes applauding respectfully. That changed sunday, hundreds of men, dressed in black, with their faces covered. They surrounded the memorial site. And rolling flags and banners, screaming together. These were rightwing nationalists. Loud, aggressive, intimidating. Many drinking alcohol. Some others in the square, challenged the behavior. There were scuffles. Police struggled to keep them apart. We were broadcasting live when someone started letting off fireworks. Riot police moved forward, surrounding the crowd and slowly driving it out of the square. Another rival group began chanting, too, denouncing the men in black as hateful racists, and cheering for the police as they advanced. The police used a water canon to clear the square. Some people here were left more upset because of what they had just seen. Daniel says his 19yearold daughter lost two legs in the suicide blast at the metro station. You see this . Thats not normal. My daughter, has halflegs. Reporter it exposed a powerful divide in how people here are responding to terror. Phil black, cnn, brussels. Well, before brussels, it in many ways we might have seen this backlash coming after similar responses in paris. Those attacks offer a great deal of context of whats happening in brussels now. The name abdeslam, notorious and tied to the bloodshed last november. Cnn got an exclusive interview with two of the brothers friends. They told our nina dos santos, that the terrorists barely resemble the men they both knew. Reporter this was life before isis. The abdeslam brothers partying at a nightclub in brussels. Its february 8th, 2015. Eight months later, brahim would blow himself at a cafe. Salah becomes the worldmost wanted man. Two of the friends took the video in the club. They talked to cnn, on the condition we hide their identities. Trn salah, was very neat. He was funny. You could have a laugh with. It wasnt unusual for him to have a drink or two. But he didnt go out and get drunk. Brahim was more intelligent. He was better behaved. Reporter they first began hanging out with the abdeslam brothers in 2011, when they went to this bar, which is now shut following a police raid. They came here to drink, to play cards, to smoke marijuana and also to watch the brothers favorite football team, real madrid, play on the tv. Things could get boisterous. Here, brahim cheers on drunken antics. Translator i used to go there after work to have a drink, have a laugh with friends, play cards. Anything that involves betting with money, really. Translator you felt at home, among family. Reporter among that family, hamza and raji. The friends say they were duped. Translator i was hamza attou. And around 10 30 or 11 00 p. M. , he was asked him to pick him up in france because his car had broken down. Reporter not long after this party, they stopped drinking and became more religious. Translator they prayed more. At the mosque, maybe only on fridays. Otherwise, it was praying at home. Reporter praying and plotting. No one, even their closest friends, knows why the abdeslam brothers changed so much, so quickly. Brahim got on with everyone. He didnt have problems with black, white, whatever race or religion. Reporter he didnt, until this. Nina dos santos, cnn, brussels. All right. Well go back to Michael Holmes at the halfhour mark for more from brussels. Lets move on now. Russian president Vladimir Putin is congratulating syrian president Bashar Al Assad, on recapturing the ancient city of palmyra from isis. Mr. Putin said russian air support was key to the syrian armys success. And he says moscow will continue supporting damascus in fighting terrorists. Earlier cnn spoke to retired Lieutenant Colonel rick francona, about the significance of the syrian armys victory. This is a big win of the Syrian Regime. It shows the effectiveness of the russian airpower they poured in there the last few months. It is a good win. Its a morale booster for the syrian army. And its another notch down the pegs for isis. They suffered some defeats over the last few months. This is probably the biggest on the battlefield. And this pushes them further up against the tigris river. The Euphrates River in syria. It opens up the road to eastern syria. Its a small enclave where the Syrian Regime has a besieged garrison there. They need to get out there and do that. This is a good sign for the syrians. President assad says syria will rebuild palmyra. Much of the historic city was destroyed by isis after its capture. Bernie sanders is on a winning streak in the democratic race for the white house. Ahead, what he still needs to do to complete a path to his partys nomination. Plus, you dont need to be on twitter to know what these five president ial hopefuls are saying about each other online. We will examine the crossover between social media and mainstream news. Back in a moment. If you have allergy congestion muddling through your morning is nothing new. Introducing rhinocort® allergy spray from the makers of zyrtec®. Powerful relief from nasal allergy symptoms, all day and all night. Try new rhinocort® allergy spray. All day and all night. I can get over 60 sheets mercedesbenz metris. To get 60 sheets of drywall into my van, i invented the foldomatic 5000. My metris also holds over 2,500 pounds of payload. Hauling 2,500 pounds in my small van is no problem. I just divide and conquer. Hauls more, stows more, tows more and fits in your garage. The midsize metris from mercedesbenz. Vans. Born to run. Cant afford to let heartburn get in the way . Try nexium 24hr, now the 1 selling brand for frequent heartburn. Get complete protection with the new leader in frequent heartburn. Thats nexium level protection. With Heart Failure, danger is always on the rise. Symptoms worsen because your heart isnt pumping well. water filling room about 50 percent of people die dog whimpering within 5 years of getting diagnosed. But theres something you can do. Talk to your doctor about Heart Failure treatment options. Because the more you know, the more likely you are. dog whimpering to keep it pumping. Democratic u. S. President ial hopeful Bernie Sanders is on a tear. He told supporters he has the momentum to ultimately win his partys president ial nomination. On saturday, he won caucuses in three states. In alaska, with 16 delegates at stake, he had 82 of the vote. In hawaii, with 25 delegates, sanders grabbed 69 of the votes. And in washington state, with 101 delegates at stake, he grabbed 73 . When it comes to the National Delegate count, Hillary Clinton is far ahead of Bernie Sanders. Cnns chris frats explains that sanders has to pull off more landslide victories to catch her. Reporter Bernie Sanders swept Hillary Clinton by wide margins, beating the frontrunner in hawaii, and alaska. They give him enough momentum and delegates to keep him in the hunt. All of those delegates are awarded proportionally. Despite losing, clinton was able to put points on the board. To figure out where things stand now, lets go to the numbers. Going into yesterdays contests, sanders trailed clinton by about 300 pledge delegates. With the sweeping wins, sanders, still lags clinton by about 240 delegat delegates. About 60 delegates gained there for Bernie Sanders. Theres delegate that will likely go into sanders column. Going forward, sanders, he needs to continue to put up the big wins. He has to win 75 of the delegates left to clinch the nomination. And 75 is a really high bar. And clinton for her part, she needs to win 35 of the delegates remaining to become the nominee. And meanwhile, the gop race, thats been largely quiet this weekend, with candidates taking a break from campaigning for easter. The few between donald trump and ted cruz, its gotten personal, with the candidates wives being dragged into the fight. And ted cruz blaming donald trump for planting a tabloid story about him and it was a charge that trump denied. All right. More on the evergrowing feud between donald trump and ted cruz. The latest row involves delegates from the state of louisiana. Trump beat cruz in the march 5th primary by almost 5 . But the Cruz Campaign is using its might to sway ten more delegates towards its camp. And trump is threatening to sue. In an interview with abc, he said the republican system is broken. The system is a broken system. The republican tabulation system is a broken system. Its not fair. I have so many millions of votes. I brought people into this party by the millions. You understand that. They voted by the millions more. Its one of the biggest stories in all of politics. And what do i have. I have a guy going around trying to steal delegates. This is supposed to be america. A free america. This is supposed to be a system of votes, where you go out and have elections, free elections. Not elections where i won. I won louisiana. And now, i hear hes trying to steal delegates. You know, welcome to the republican party. Cnn is hosting the republican town hall this week, featuring donald trump, ted cruz and john kasich. You can watch it wednesday at 1 00 a. M. In london, 8 00 a. M. In hong kong, right here on cnn. Before relieve politics. One last announcement from the trump camp. The frontrunners daughter, ivanka, gave birth to a boy on sunday. And here he is, theodore james. Theodore, which can be shortened to ted. As in ted cruz. This is trumps eighth grandchild. And Chelsea Clinton is set to give birth this summer. It may be late for it, theres some snow coming to some western u. S. States. Karen maginnis joins us with the latest forecast. Karen, its supposed to be spring. So it would appear. At least on the calendar. But we have a powerful storm system thats going to take a while to move out of the great basin of the United States. Were going to see the wind whip around, all the way from montana, down across the central see sierra nevada. This is where were looking at snowfall. Maybe as much as a meter in some places. A lot of moisture being fed in from the south. But also from the north. We get a little bit of a break in the pacific northwest. But not for very long before the next round of snowfall moves in. There you see, right along nevada and utah, we could see a couple of feet. But the higher peaks, plenty of snowfall. The ski operators might stay open longer. This is where the substantial snowfall will be. What a season it has been. And then, across the united kingdom, and through the english channel, the normandy and the brittany coast, weve seen powerful wind gusts over the last 24 hours. Rain has really materialized, especially across the regions. Into paris and the lowlands and coastal sections of scandinavia. A little bit of wind and rain to report there. But very powerful wind gusts, especially along this brittany and normandy coast. And some areas, nearly 130 kilometers per hour. This is typically a windy area. This is fairly exceptional to what we commonly see. By tuesday, the winds slack off a little bit more. But it looks like just a wild break in the weather. The systems are coming in off of the north atlantic. And really feeding in quite a bit of moisture. Temperatures have been just about average for this time of year. Typically, in the low to mid teens. And well see that trend continue. Some areas to the south, well see temperatures cool down just a bit. There, you can see the long southern fetch of moisture, feeding into portugal and spain, as well. We look at the forecast. As i mentioned, temperatures just about on par to where we would expect them to be. Heres a look at london. It is going to be fairly windy there. Watch out. We have advisories for galeforce winds in places. Temperatures in the low teens. As we head towards next weekend, we could see the temperatures bump up a few degrees. Enjoy that. Rosemary . Thanks so much, karen. Well talk again soon. Still to come, what does model kylie jenner have that the five president ial candidates would dearly love . Were not talking about her