Jason Rezaian thanks Kerry in first appearance since release

By Yeganeh Torbati WASHINGTON (Reuters) - Washington Post reporter Jason Rezaian thanked U.S. Secretary of State John Kerry on Thursday for negotiating his release from an Iranian prison in his first public appearance since leaving Iran nearly two weeks ago. Rezaian, jailed for 18 months after being accused of espionage, was freed this month in a prisoner swap negotiated between the United States and Iran coinciding with the implementation of a deal that curbs Iran's nuclear program in return fo