Roscosmos and NASA are the principal partners in the ISS. They continue to collaborate for policy and technical reasons (the ISS cannot be broken apart, for example) in the wake of the internationally condemned Russian invasion of Ukraine in 2022, which severed most international space relationships with Russia.

NASA and Russia's Roscosmos cannot agree on how dangerous the leaks in the Zvezda module may be to the station. While Russia believes the risk is low, NASA is reportedly concerned the leaks could lead to a catastrophic structural failure.

The dispute is about a small yet persistent leak in the vestibule of the Zvezda service module called PrK, which separates a docking port from the rest of the module.