NEW: Russia-Ukraine Putin nuclear threats lead US to examine alert level | LiveNOW from FOX

Russia's invasion of Ukraine has been met with swift response from countries across the world, with many calling for Russian President Vladimir Putin to be convicted of war crimes. U.S. Secretary of State Antony Blinken told reporters that the U.S. was forced to examine it's alert level based on comments from Putin about his country's nuclear arsenal. Subscribe to LiveNOW from FOX! https://www.youtube.com/livenowfox?su... Where to watch LiveNOW from FOX: https://www.livenowfox.com/ Follow us @LiveNOWFOX on Twitter:   / livenowfox   Raw and unfiltered. Watch a non-stop stream of breaking news, live events and stories across the nation. Limited commentary. No opinion. Experience LiveNOW from FOX.