Sen. John McCain, R-Ariz., discusses the danger posed by new skirmishes between Ukrainian forces and pro-Russian groups in eastern Ukraine.\rbr\rbrISIS sweeps through Iraq, undoing everything U.S. troops accomplished, while the old gang of warmongers gets back together to voice their opinions on the .\rbr\rbr\rbr\rbrSen. John McCains rhetoric on the conflict between Ukraine and Russia over the Crimea region continues to escalate in intensity as the days go by. On Friday .\rbr\rbrPresident Obama calls Vladimir Putin to discuss the situation in Ukraine. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: .