Texas finally in custody after being discovered hiding in a closet under a pile of laundry, and hes not the only one whos been arrested. More on that coming up. But we begin with those explosive allegations from the kremlin claiming ukraine attempted to assassinate Vladimir Putin in an overnight drone attack. Video released on social media and russian state tv purports to show the roof of the kremlin on fire as well as flying objects shot down over moscow. In a statement today, russia placed the blame squarely on kyiv saying, quote, we regard these actions as a planned Terrorist Attack and an attempt on the president. The russian side reserves the right to take retall toir measures where and where it sees fit. Volodymyr zelenskyy addressed the allegation at a Press Conference about an hour ago. Listen. We dont attack putin or moscow. We fight on our territory. We are defending our villages and cities. Nbc news chief Foreign CorrespondentRichard Engel is following the story from london. Our National Security and Global Affairs reporter dan de luce has the latest. And peter baker, a chief White House Correspondent and msnbc political analyst. The kremlin providing no evidence of this attack. Kyiv denies it. What do we know right now . Reporter we know that officials in russia are escalating their rhetoric. They are vowing to respond to this alleged attack. In fact, dmitry medvedev, the former president and Prime Minister just a short while ago on his Telegram Channel said that, quote, there is no other option except the physical elimination of zelenskyy and his clique after this attack. So that is a message from a very senior russian official, former official still close to the inner circle around Vladimir Putin. They are trying to use this as it seems as a justification for some sort of escalation, whether they will escalate or not, they are certainly building the case for that. This is not unusual to have threats of this level coming out of russian officials. If you listen to what theyve been saying and watch Russian Television over the last several months, really from the beginning of the conflict, but it has escalated over the last several months, they often talk about destroying kyiv, the need to use nuclear weapons, but now they are specifically saying that in response to this alleged attack, which Russia Claims was an Assassination Attempt against Vladimir Putin, even though he was not in the kremlin at the time and ukraine has denied any involvement, now this one official says russia needs to respond an eye for an eye by eliminating zelenskyy. All right, so dan, we know the u. S. Is working to validate this attack. What are you hearing . Thats right. The u. S. Is not ready to confirm that this alleged incident even took place. And they certainly arent confirming there was some kind of an Assassination Attempt, and you have a lot of analysts look at this Video Questioning how it has been distributed, how it came to be. It didnt really follow the normal, typical pattern of how these videos usually emerge, and also analysts saying if there was some kind of explosion and a drone near the kremlin, isnt that more of a warning shot . It doesnt really look like a serious Assassination Attempt in the middle of the night. So a lot of questions around that. You also have the Secretary Of StateAntony Blinken also saying publicly we just dont know what happened. But he also said, you know, look, ukraine is under daily attack, a barrage of missiles and artillery rounds on civilian targets, peoples apartments, homes, cities, and he said, you know, its up to ukraine how it wants to defend itself and how it responds. It is also important here, there is context. There are a lot of suspicions that there have been some mysterious Sabotage Type Operations inside russia previous to this outside of ukraines border, not Assassination Attempts but explosions at airfields and so on that some people have linked, tried to link to ukraine and perhaps proukrainian groups were involved. We dont know, so thats also a context here. Peter, when you were a bureau chief in moscow, when you look here at the situation, how its unfolded, what gives you pause . What are you thinking about . I think dan raised a lot of important questions. Obviously you cant trust on its face what russia puts out there. They have reasons to exaggerate if not completely invent scenarios like this to justify actions that they want to take. We dont know at this point obviously. One thing thats important to understand, he said they called it an Assassination Attempt against putin. It seems more like symbolism than Anything Else. Putin wasnt there at the time, and he doesnt spend a lot of time at the kremlin. Most people know that in moscow. He doesnt actually come to the office, if you will. He works in the country or other locations like that. If it was an attack by a Hostile Force it would be meant to be showing off in effect we can do this. Keep in mind, the idea of attacking a foreign leader is not exactly new to this conflict. It began with russias attempt to take Down Zelenskyy, that was the whole strategy at first was to decapitate the zelenskyy government when they first went in in february of 2022. They were going to take Down Zelenskyy and replace him with a Puppet Regime that would then basically make ukraine into a vas el state for moscow e. We dont know yet whether this was the ukrainians or whether it was something else. Dan, when we say, when you hear Secretary Of State blinken saying we dont know what happened yesterday. Do you get a sense theyre Holding Things close to the vest . Why is it so difficult to exactly discern what happened . I think well just have to wait. It will take them some time to look at these videos and try and gather more intelligence about what happened. If you talk to former officials, they also point out that authoritarian regimes need enemies, they need adversaries, they need scapegoats, and this incident would kind of fit that bill possibly, right . You have russia having tremendous difficulties on the battlefield. They have manpower problems. They have supply problems. And the war is not going according to plan obviously, so this kind of incident alleged incident is a possible Propaganda Opportunity where they can then justify a response or justify why they have to conscript more russians to fight in that war. Dan de luce, our thanks also to richard, and peter, youre going to stick around. We have Breaking News right now out of atlanta where there is an active shooter situation. The local police have reported multiple people are injured and the shooter is not in custody at this time. The police are urging people in the area to secure their buildings and shelter in place. Obviously this is unfolding as we speak, i want to bring in former atf Special Agent in charge Jim Kavanaugh here. Jim, unfortunately here we are again talking to you about another active shooter situation. The shooter not in custody. Multiple people injured. Were looking at some video here from the scene. What are police on the ground likely doing right now to get this shooter in custody . Well, theyve gone and set up their command post on the street. You see a lot of officers with their Tactical Gear on. Theyve got the job, their task today is, you know, locate, isolate, and eliminate the threat. Theyve got to find the shooter and right now they dont have him. We dont know if they have him located or not, but what theyve got to do is locate him, and hopefully that comes from citizens in the building, nearby who have heard the shots or see the person, and theyll call 911 to help the officers locate him. Once they locate him in a room or a building, they can isolate him, squeeze him down, get the perimeter secured, and then they can evacuate behind them so they got to locate him, and then evacuate behind the officers and then they can deal with the threat, eliminate the threat by arrest or if they have to shoot him or if they can talk to him into surrendering, whatever. Thats the process that the on Scene Commanders have to deal with. This is a heavily trafficked area, right now is lunchtime. Whats the biggest concern here on the ground for the people to stay safe near the scene . Yeah, well, a guy in a building like that, you know, in downtown atlanta, weve all been around atlanta a lot, and you know, a highrise building can bust a window out, can be shooting people on the street if he loses targets inside if people run and hide. Of course officers can deal with that, but the question is it takes time so you have to he can get off shots at pedestrians on the street a block away or or two blocks away if he has a rifle. Its a very, very dangerous situation at the moment in downtown atlanta. Everybody in that area has got to really lay low, get hidden, you know, dont be peeking up through the windows, curiosity killed the cat. You know, lock yourself down, get your loved ones locked down. Get on the phone to your loved ones. Listen for wait for police commands. Monitor the media. Dont be running around trying to see whats going on because, i dont know, the killer might be able to see you. Lets give the police a chance to locate him, isolated, and then eliminate that threat. I mean, this is, you know, so eerily familiar to so many situations that we have been in recently. Right now were showing you a map of where this is taking place. We have, yun, you know, Highland Park last summer, that July 4th Parade on a city square. Right now as were looking at the screen, these are new pictures that the Police Department there have tweeted out of the suspect here, the person that theyre looking for. You can see here that this was taken via Surveillance Video, and we see a suspect here in a facemask, in a hoodie, looks like maybe some kind of backpack around the front of them, doesnt necessarily look like Tactical Gear, and im not also certain if we can necessarily see the weapon or if its sort of camouflaged against the dark pants. As you look at these images here, whats standing out to you . I cant really tell about a weapon here, could have a handgun if this is somebody whos shooting, handgun could be in the bag. Could be hidden by his jeans. I dont see anything in his left hand. He might have hidden it by the bag. The bag looks heavy, may be full of ammunition. Maybe he has a handgun, but you know, thats still, you can kill a lot of people with a handgun. The killer at Virginia Tech had two hand guns and he killed 32 people. Dont discount the deadly effect of a handgun in proximity to people trapped this in a building. Hes going to lose the gun battle if he gets involved with atlanta p. D. , but the question is can they do it quickly. We just saw the whole texas slaughter, and were dealing with a rural area where deputies have to respond over many miles and it takes a lot of time. Here were in one of americas major urban centers, Midtown Atlanta and you get a very Strong Police response, a lot of officers there right away, and they can deal with that. But they also have, you know, large buildings and those buildings have rooftops, they have basements. They have offices and nooks and crannies, they can connect to other buildings. There can be alleyways, so it presents other challenges to them. Yeah, i remember at Highland Park it was kind of scary, where is the suspect . Is the suspect hiding in a local business, is the suspect shooting from above. When you see the Surveillance Video and police got it out incredibly quickly, they want to apprehend this person or find out what they know. It looks like its from a business, not necessarily clear if that shooter went inside a business and shot. Obviously these are questions we still dont know, but i mean, you know, based on what were seeing just from this Surveillance Video, do you glean here that this shooter did go inside a place of business . Thats what it appears to be, and it looks like he might have a pistol in his right hand. Its hard to tell because his jeans are dark, but its possible that he does. And the bag looks heavy, so i would, you know, pause at that, not for sure, of course, but posit that that bag might be full of ammunition. He can reload multiple clips. He can reload with different magazines as he moves. Hes clearly disguised. Hes got the facemask. Theres a photo with his facemask off, you know, if somebody knows that guy, they need to call 911. They need to let Atlanta Police know who he is. That can really help. If they can make contact with the guy by knowing who he is, you know, the negotiators can call him by his name. They can talk to him. They can maybe slow it down. They can maybe go to his house. They can maybe find some, you know, notes or something he left to see what hes trying to do. Yeah, that is important to call everybodys attention to the screen to see this is the first photo that were seeing here of the Person Police want to talk to here in relation to this active shooter situation in the Metro Atlanta area here. The first picture were seeing without a facemask and jim, we just saw a bunch of very large white vehicles, one of them even looked like potentially a semi. Were clearly seeing Law Enforcement here set up for a robust response, it almost looks like some kind of command post theyre setting up. Theyll bring in the command post where the onScene Commanders will gather from all the agencies. Youll have the atlanta pd, the gbi, the Georgia State patrol, and youll have the federal agents, fbi, atfs, u. S. Marshals, theyll all gather there. The commanders of those agencies will get together. They will discuss strategies. Theyll bring in more people. Youve seen some s. W. A. T. Vehicles, a bear cat, you know, those Armored Vehicles that can protect s. W. A. T. When theyre moving in. Theyre blocking the streets off of course. They have ambulances on standby. Theres a Motor Officer coming in. Theyve got to help with traffic. Theyve got to keep people back. This is the strength here of a city Police Department that has all these officers that can deal with it quickly. But nevertheless, nevertheless, they still have the challenge of finding the shooter, and it can be daunting. Yeah, and jim, how do they go about doing that . We have a clear picture here of the suspects face, and you had mentioned, you know, they might rely on the public to hopefully be watching News Coverage or maybe see it online, see if they recognize this person, other than that how has does Law Enforcement go about a picture can help of course but at the end of the day, if theyre trying to locate this person, locate what their motive is, maybe try and talk with them, negotiate with them, how do they go about doing that . That comes thats the one end is the detectives trying to glean information from the photo from the public. The other end is the active officers on scene, the Patrol Officers and tactical officers who are pressing into the building against an active shooter, active killer, so theyre pressing in, if this building is in place where the photo is and where shots were fired, those Patrol Officers are Pressing Down the hallway until they can find a victim or make contact with the shooter. Pressing down, can you explain what that means . Walking through, rapidly going through with their tactical rifles, looking in every room, moving, moving. Kind of what we saw on nashville Body Cam Video . Exactly what you saw there. Youre pressing to contact, what youre trying to do is get to contact with the shooter so his focus is on Law Enforcement and not the citizens in there who are not armed. You got to keep pressing and pressing. In fact, the training is if theres wounded people in the hallway, you step right over them, which is counterintuitive to Law Enforcement training generally because you want to help people who are wounded. When you have an active shooter or killer you have to step over those people. People can even be calling out to the officers for help, and they have to step over and press to contact, press to contact so they can slow it down, isolate and evacuate behind them and then they can get medical help to those wounded behind them, and thats a task. You see a bear cat there,