By Mike Collett-White and Ronald Popeski SIMFEROPOL, Ukraine/KIEV (Reuters) - Crimeans voted in a referendum on Sunday on whether to break away from Ukraine and join Russia, with Kiev accusing Moscow of rapidly building up its armed forces on the peninsula in "crude violation" of an international treaty. Caught in an East-West crisis reminiscent of the Cold War, Ukrainian acting defense minister Ihor Tenyukh said Russian troop numbers in Crimea were now almost double the level agreed with Moscow, and Kiev's forces were taking "appropriate measures" along the border with Russia. Tenyukh dismissed any suggestion that a militarily and economically weakened Ukraine might give up in the face of the Russian power. Western countries say the vote, which is likely to favor union with Russia for a region which has a Russian-speaking majority, is illegal and being conducted at the barrel of a gun.

NEW YORK (AP) — The disappearance of Malaysia Airlines Flight 370 has exposed wide gaps in how the world's airlines — and their regulators — operate. But experts warn this isn't likely to be one of those defining moments that lead to fundamental changes.