U.S. prisoners leave Iran for U.S. base as Obama hails win for diplomacy

By Lesley Wroughton and Parisa Hafezi WASHINGTON/ANKARA (Reuters) - Three Iranian-Americans left Tehran for a U.S. base in Germany on Sunday under a prisoner swap following the lifting of most international sanctions on Iran under a deal that President Barack Obama said had cut off Tehran's path to a nuclear bomb. In a sign of sustained readiness to track Iranian compliance with remaining United Nations curbs, the United States imposed fresh sanctions on 11 companies and individuals for supplyin