Article Photos: Russia warns heavier sanctions could backfire 1/12

In this March 6, 2014, photo, Ukrainians and their supporters waving Ukrainian colors, is seen against an American flag during a rally in front of the White House in Washington. Underlying tough talk about taking harsh punitive measures against Russia for its military incursion into Ukraine are economic complications and worries that sanctions levied against Moscow could backfire on the U.S. and Europe.  (AP Photo/Manuel Balce Ceneta)