https://www.vice.com/en_us/article/jgpmz4/russia-to-build-its-own-orbiting-space-station-abandon-iss

Russia will abandon its decades-long partnership on the International Space Station (ISS) after 2024 in favor of developing its own crewed station in orbit, the nation’s new space chief announced on Tuesday in a meeting with President Vladimir Putin. 

“The decision to leave the station after 2024 has been made,” Yuri Borisov said, according to the Associated Press.