The u. S. Cements diplomatic relations with cuba. Secretary of state john kerry, the highest ranking u. S. Official to visit cuba in seven decades. Isis has a new weapon of war. Senior Defense DepartmentOfficials Say that isis unleashed mustard gas. Youre in trouble. Com. The ap reporting that one email on her private server included talk of a u. S. Drone operation. Jeb bush defended his brothers decision to invade iraq. Taking out Saddam Hussein turned out to be a pretty good deal. China in that deadly blast, the death toll now standing at 56. Russ cuers have pulled a survivor from rubble. Dozens missing. Sudden heavy rain in las vegas, thousands left without power. Bracing for el nino. This year could be one of the bet wettest. This is potentially a godzilla el nino. The duke and duchess of cambridge have warned photographers to stop harassing their children. They say their activities place a security risk. Police are continuing to investigate the death of 45yearold young at the Amusement Park after being hit by a roller coaster. A school bus slammed into a liquor store, and all 11 children on board were taken to the hospital. All that this west jet Flight Attendant obviously loves his job. If that was the pilot, im getting off that plane. There he is tom brady, on this football field. He has to be pumped. Brady dealing with a lot of off the field issues. Do you think they checked the footballs before this game . Five or six times. And all that matters california combat veteran had to fight for his life. He survived a bear attack. Its unreal. I mean, there he was. He was right on top of me. On cbs this morning. How far is Bernie Sanders going to go with his underdog moment . The 73yearold curmudgeon a threat to Hillary Clinton . Bernie is like that coolass teacher you see in the hallway and youre like what up mr. Sanders this mornings eye opener presented by toyota. Presented by toyota. Lets go places. Captioning funded by cbs welcome to cbs this morning. Charlie rose on assignment and Norah Odonnell is off. We have it covered. Were here along with Christine Johnson of our new york station, wcbs. History is unfolding in havana right now where the American Flag will fly again. Secretary of state john kerry is taking part in a ceremony at the u. S. Embassy in the cuban capital, the nations first top diplomat to visit the island in 70 years. This mornings flagraising is a symbolic step in normalizing relations between cuba and the United States. Margaret brennan is at the newly reopened u. S. Embassy in havana. Good morning. Reporter good morning. Its an historic moment here in havana. Secretary kerry just arrived with a number of u. S. Officials, congressmen and prominent cubanamericans and even brought with him the same three u. S. Marine guards who helped shut down them because back in 1961. It will be an emotional day for them. Theyll help kerry raise the American Flag here for the first time in 54 years. The u. S. Embassy in havana still looks a lot like it did when it was shuttered in 1961. Fidel castros close relationship with the soviet union drove the u. S. To cut diplomatic ties. Relations then went into a tailspin. The u. S. Sponsored a failed invasion and attempted to assassinate fidel castro. Who then let the soviet union store Nuclear Missiles on the island, aimed at the u. S. I have directed the armed forces to prepare for an eeventuality. Reporter the tit for tat continued for 50 years but now the american billboards are gone and cubans hope visitors will jump start their weak economy. We dont need to be separated. Were too global today. We need to come together. Reporter but cuban diplomat, who negotiated the reopening of the embassy says continued u. S. Trade embargo limits progress. There cannot be normal regulations between the two countries when there are economic sanctions that damage the cuban people. And damage even the interest of the American People. Reporter cubans still cannot buy goods from the u. S. , and the castro government promises new access like credit card use and the internet have not panned out. But many cubans hope the diplomatic opening may improve life. [ speaking in spanish ] one doctor told us, cuba is already changing and there will be positive changes in the future. This shopkeeper said there should be better relations, because the people have nothing to do with politics. Many here are sick of politics, and hope that todays flagraising will be more than symbolic. After the ceremony ends, the hard work begins. Kerry will meet with his cuban counterpart, and in the most controversial part of this trip, hell sit down with cuban dissidents who are frustrated with the castro government. Margaret brennan, thank you. Well bring the flag raising live in a few moments in a cbs news special report. A report this morning says an email discussing secret cia drones was sent through Hillary Clintons private unsecured server. The Associated Press says it was one of two messages with top secret information sent to clinton while she was secretary of state. The fbi took possession of that server on wednesday. Nancy cordes is in washington where the email controversy is stirring up the president ial race. Nancy, good morning. Reporter good morning. That Drone Program discussed in the emails was widely known, but because it was a cia operation, intelligence say that those emails should have been considered classified. As part of an ongoing debate about just how sensitive the information in the emails was. For republicans, clintons email problems went from attack line to punch line thursday. The problem was, the debate invitation was emailed to hillary. Mr. Huckabee reporter at the iowa state fair, Mike Huckabee joked about her new address. Hrc youreintrouble. Com. Reporter clintons democratic opponents like Martin Omalley have tried to tread lightly. Follow the stuff about the email server and the top secret emails and all of this these are not the ideas that excite the electorate. Reporter california senator Dianne Feinstein came to clintons defense thursday. The top democrat on the Intelligence Committee put out a statement saying, as someone who regularly reviews classified materials, i can say that those documents are always clearly marked as containing classified information. The emails identified in clintons situation did not contain these markings. The fbi picked up clintons server wednesday, not from her chappaqua new york home but from a data center in new jersey. A lawyer for the i. T. Firm that manages the clintons email system told cbs news that the clintons decided to upgrade their system sometime after clinton left the state department in 2013, and that the old server is now blank, and likely does not contain usable information. If you want to permanently say you have deleted something, thats hard to do. Reporter Senior Editor at the tech website cnet says to truly wipe a server clean, the material needs to be intentionally overwritten, multiple times. If you write something on a chalk board and you erase it, you can still kind of see the outline and thats sort of like deleting a file. If you write over it again, its harder to see. The more times you write over it and erase it, eventually youll never be able to decipher what the original data was. Reporter the fbi hasnt said what it plans to do with the server. The intelligence communitys Inspector General referred the matter to them in the first place, because he was concerned about the security of material that might be on it. So its possible, gayle, the fbi is more interested in safeguarding the server than in examining it. All right, nancy, thank you. This morning a 19yearold firefighter was pulled alive from the rubble of the devastating explosions in china. He was trapped for 32 hours. New video in tianjin shows the devastation. At least 56 people are dead. Heres a look at the Warehouse District this morning. You can see its still smoldering there. Our partners at sky news are in beijing with the latest. Katie, good morning. Reporter good morning from beijing, where a remarkable story is emerging here as a young firefighter pulled from the wreckage some 32 hours after this blast. He is 19 years old, and in his first year with the fire service. Now being treated in hospital for serious burns and smoke inhalation. But in a stable condition. He was realizing he couldnt move and then fighting to stay conscious until help could arrive. We heard too from one of the men among the first firefighters to arrive at that scene. He has described seeing that initial explosion, throwing himself facedown on the ground, which saved his life. But feeling debris landing on top of him, and then being flung some 5 to 6 meters across the ground by the force of the second explosion. He described, again, coming round, seeing what he described sky, and managing to crawl to safety behind one of the heavy industrial shipping containers. So extraordinary individual stories here, but a number of their firefighting colleagues remain unaccounted for. And today the work at that blast site goes on. Work now complicated by serious concerns as to exactly which substances may have been involved here. And exactly which chemicals may now be present at that scene. Vinita. Thank you. Isis is accused this morning of using mustard gas, the chemical weapon outlawed nearly a century ago. Kurdish troops fighting in Northern Iraq say they were the targets. American Officials Say the charges are plausible. Clarissa ward is following the story from istanbul, turkey. Good morning. Reporter good morning. Well, a senior u. S. Defense official told cbs news that reports that isis has used mustard gas against Kurdish Forces are, in fact, quote, credible. But so far, there has been no details or no information as to when these were used, how they were used, and where they were used. Now what we believe we know is that Kurdish Forces claimed earlier this week they came under a chemical attack. They did not specify what chemical was used in the attack, but video appeared to show men with respiratory problems, one man with burns, dozens of them were injured. None were killed. And u. S. Officials say they do believe that isis has possession of mustard gas, possibly from old Saddam Hussein era stockpiles. But more likely, from syria. You may remember, in 2013, the assad regime admitted to having stockpiles of mustard, and they claimed at that time they had been destroyed, all of them, as part of the deal that was brokered by russia and the u. S. Now we know in the past the assad regime has used chlorine gas in attacks, and kurdish fighters claim isis has also used chlorine. But technically, chlorine is not a banned substance, unlike mustard gas. Mustard gas is a very primitive, very crude weapon. It was popular in the first world war. But really, you need to use it in large quantities to infect any serious, serious damage. The pentagon says its still investigating these reports, and today now Kurdish Forces are claiming they came under yet another attack last night. But so far, we have not been able to confirm that, christine. All right, Clarissa Ward in istanbul, thank you for that report. Japans Prime Minister this morning stopped short of apologizing for his countrys actions in world war ii. Shinzo abe expressed profound grief for everyone who died. His closely watched statement marks the anniversary of the end of the war. Abe said future generations should not continue apologizing. A muddy mess this morning in parts of utah. A mudslide forced 11 families from their homes overnight south of salt lake city. Heavy rains in Woodland Hills caused up to four feet of mud to pour into homes. Nobody was hurt. Emergency responders used sandbags to protect the houses. This morning, forecasters warn that storms of god zil ya proportions could hit the west coast. A nasa climatologist describes the system as a godzilla el nino that could bring once in a generation storms to the west this winter. John blackstone shows how this could impact california, especially the fouryear drought. Reporter as strong el nino could turn droughtstricken california from this to this. In San Francisco, the winter of 199798 was the wettest in 120 years. A full years worth of rain fell in los angeles in just one month. Mountain towns were buried under twice the average snowfall. Whats coming this winter could be even stronger. El nino comes in all sizes, small, medium and large. But very rarely do we get a godzilla el nino. Reporter godzilla is apparently the only word to describe what climatologist william patser sees in images that show unusually warm water spreading across the pacific near the equator. That warm water mass, the signature of el nino, seems to be growing even broader than in 1997. This one looked promising from the start. That berth, it was a big baby. Reporter in the United States, a strong el nino can bring more precipitation across the south and up the east coast. Northern states are likely to have a winter that is drier and warmer than usual. This will be a very strong el nino. Reporter in california, meteorologist john notverdict is watching with excitement. Theres going to be lots of storms to forecast if this pattern bears out. Reporter can californians start going into the back of their closet to find their umbrellas and raincoats . Ha ha. Yes. Reporter but forecasters warn that four years of drought have left california so dry, even this powerful el nino may not be enough to bring the state back to normal. For cbs this morning, john blackstone, San Francisco. This morning, the lone survivor in a connecticut triple murder is blasting a court ruling that wipes out the attackers death sentences. Jennifer hawkepetit was raped and strangled during a Home Invasion in 2007. Her two daughters died from smoke inhalation after their house was set on fire. Their father, dr. William petit, survived. The Connecticut Supreme Court ruled the states Death Penalty is unconstitutional. That decision in a different case affects 11 inmates on death row. Cbs news legal expert rickicalliman joins us at the table. Good to see you. We all remember this story, because it was so heinous and bill petit said it was devastating to him, this decision. Help us understand the courts reasoning here. We should remember this case came to the court not through the petit case, but came through a case brought by a man named edwardo santiago and back in 2012, april 25th, the legislature, the body elected by the people of connecticut, enacted a law that said, the Death Penalty is unconstitutional well, the Death Penalty should be abolished going forward. But anyone who was still on death row, there were 11 people, including the two killers who i looked at as monsters in the petit case. They were still on death row. And the legislature probably, because of those two people, said, the people on death row, theyre still getting executed. So santiago goes forward with the case. And now the Connecticut Supreme Court in a 92page opinion, 75 pages by the majority, goes through the whole history of the Death Penalty and says, no more. The Death Penalty is now unconstitutional under the connecticut constitution. What about the families of these victims like dr. Petit . I would imagine he had such a sense of closure, now everything is reopened. Can he appeal this decision . No. What you have here is this. Because they decided that the Death Penalty is unconstitutional, as cruel and unusual punishment, this is their reasoning, they say it no longer comports with contemporary standards of human decency, and it serves no penal logical legitimate purpose. So with those two prongs and because its the connecticut state constitution, its final. Its over. The only way to overturn this would be by a state constitutional amendment that is not going to happen. It will be interesting to see how this influences other high courts across the nation. It will. Thank you so much. A man lost his cell phone riding a roller coaster in ohio. He was killed trying to get it back. The coaster hit 45yearold james young thursday at the cedar point Amusement Park. Police say young jumped over a fence to look for his cell phone after it fell into a restricted area. This morning, the epa reports colorados river seems to be restoring itself after a flood spill. Toxicity levels in the river are going down. It all stems from a spill at the gold kay mine last week. The epa says nearly 3 million gallons of sludge poured into the river. The nfl suspended tom brady for four games, but that did not keep him off the field last night. There he is, tom brady, comes out for the first offensive series for the patriots. What a long off season its been for number 12. You all know the story. After all that hes been through. This is home for him. The super bowl mvp started new englands first preseason game. The patriot fans glad to see him. Brady played less than one quarter after last nights loss to green bay. He was challenging the deflategate suspension that begins with the regular season. Britains royal family says paparazzi have crossed a line. Ahead, the blunt warning this morning for photographers trying to snap a picture of the young prin, this National We