A Russian citizen was released as part of an exchange involving American teacher Marc Fogel and will return to Russia soon, the Kremlin said.

Fogel was sentenced to 14 years in prison in Russia, which the U.S. has condemned as a wrongful detention, after a small amount of medical cannabis was found in his luggage.

President Donald Trump’s announcement that he and Russian President Vladimir Putin had agreed to begin negotiations on ending the war in Ukraine followed a prisoner swap between the two nations.