MOSCOW—The Kremlin said on Thursday complete silence was needed when it came to discussions about possible prisoner exchanges involving Evan Gershkovich, a Wall Street Journal reporter arrested in Russia a year ago on suspicion of espionage.
Mr. Gershkovich, 32, became the first U.S. journalist arrested on spying charges in Russia since the Cold War when he was detained by the Federal Security Service (FSB) on March 29.
