Weapon Experts News Today : Breaking News, Live Updates & Top Stories | Vimarsana

About what really happened here's miguel almaguer. >> someone put a live bullet in a gun, a bullet that wasn't supposed to be on the property. >> reporter: bold and defiant, alec baldwin insisting it's not his fault cinematographer halyna hutchins was shot and killed. >> i feel that -- that someone is responsible for what happened. and i can't say who it was, but i know it's not me >> reporter: casting aside blame, baldwin telling abc news, the gun that killed hutchins and injured director joel souza went off in his hand while they were rehearsing a scene. >> how about that? does that work do ...

American b-1 bombers and south korean fighter jets flew over the korean peninsula and the u.s. military says a test of its missile defense system thaad was successful. the system was designed to track and intercept missiles before they reach their targets. weapon experts fear that the latest launch of this intercontinental ballistic missile believes that north korea now has the capability to threaten major u.s. cities. i am joined by msnbc contributor steve collegeons who is editor-at-large for "the atlantic" and author of "a nuclear showdown," north korea takes the world. good to have you her...

May not be holding this morning. fred is in damascus for us this morning. fred, u.n. vehicles came under sniper fire today. are the attackers back at the site of this alleged chemical attack now? >> we're not sure where they are at this point, kate. they did say they wanted to go back to that site. the lead vehicle of their convoy, which has to, of course, go to government-controlled territory to rebel-controlled territory and came under fire from sniper. hit deliberately multiple times and the vehicle became disabled and therefore they had to bring it back and replace that vehicle. the u.n. s...