Republican nominee Donald Trump hinted the U.S. may revisit NATO's longstanding policy of defending its allies against possible Russian aggression if he becomes president, saying that some allies aren't holding up their end of the bargain.
Chicago Tribune: Donald Trump says he might not defend NATO allies if Russia invades
A US Air Force Boeing B-52 Stratofortress flies overhead of a combined arms live fire demonstration for distinguished visitors during Saber Strike 16, June 13, 2016 at Adazi Military Base, Latvia.
