Venezuelan President Hugo Chavez on Sunday bluntly accused the U.S. ambassador to Bolivia of trying to stir up military rebellion against his leftist ally Bolivian President Evo Morales. Chavez, at the forefront of a leftist shift that is challenging U.S. influence in Latin America, routinely trades insults with Washington, which he blames for a short-lived coup that briefly toppled his own government in 2002. Full Story