Because of the sanctions imposed by the Biden government due to the Russian invasion of the Ukraine, officials at Roscosmos today suggested that they are considering ending their participation on ISS in 2024, rather than 2030 when NASA wants to de-orbit it.
“Roscosmos currently has a government permission for operating the ISS only until 2024. The issue of extending the agreement in the current conditions causes our skepticism,” the Roscosmos press office said.
The Russian space agency said it hoped that the US Department of State would soon stop its pressure on NASA and allow it to begin a dialogue with Russia. “If we do not come to an agreement, this will have its effect on the international piloted space program,” the press office said.
This really isn’t news. Even before the invasion, Russia had been uncertain on whether it would continue on ISS after ’24. It really needs ISS, as its own effort to build a Russian station has numerous problems. The Russians however also recognize that at least one of its modules on ISS, Zvezda, is failing. The station’s life is limited regardless.
Moreover, the U.S. is shifting away from government-owned assets in space. ISS’s replacement will be privately built and owned, and it is very very unlikely those private companies will partner with Russia.
The Russian partnership at ISS is ending no matter what. The Ukraine war is merely accelerating it.
As for maintaining ISS after ’24 should the Russians leave, NASA has some of the main Russian responsibilities well covered, due to private enterprise. It will test raising the station’s orbit shortly using the Northrop Grumman Cygnus freighter presently docked with the station, thus replacing Russia’s Progress freighter boosts. And the availability of Dragon and Starliner capsules will provide lifeboats for station crews.
The big question is that some of the life support equipment is provided by Russian modules. If the Russians detach the portion of the station, ISS will lose some of those capabilities. Hopefully Axiom’s first ISS module, due to launch by ’24, will replace those Russian assets.