Iran has freed Washington Post journalist Jason Rezaian, according to Iranian news media. He was arrested in Iran in 2014 and convicted of espionage last year. Here's what you need to know about the case against him. (Monica Akhtar/The Washington Post)
By Carol Morello, William Branigin and Karen DeYoung-January 16

VIENNA — Iran released Washington Post correspondent Jason Rezaian and three other detained Iranian Americans on Saturday in exchange for seven people imprisoned or charged in the United States, U.S. and Iranian officials said, a swap linked to the imminent implementation of a landmark nuclear deal between Tehran and six world powers.

VIENNA — Iran released Washington Post correspondent Jason Rezaian and three other detained Iranian Americans on Saturday in exchange for seven people imprisoned or charged in the United States, U.S. and Iranian officials said, a swap linked to the imminent implementation of a landmark nuclear deal between Tehran and six world powers.