Kerry Threatens Sanctions if Putin Doesn't Reverse 'Incredible Act of Aggression' in Crimea

U.S. secretary of state warns of 'visa bans, asset freezes, isolation with respect to trade, investment,' hints at U.S. business boycott of Russia if it doesn't 'roll back invasion.'

U.S. Secretary John Kerry on Sunday threatened a range of economic sanctions against Russia if it did not roll back its military takeover of...