Russia withdrew from the Intermediate-range Nuclear Forces (INF) Treaty in response to the US withdrawal, following Donald Trump's decision to exit the treaty in 2019. The INF, signed between the US and Soviet Union in 1987, banned intermediate- and short-range nuclear missiles between 500 to 5,500 km range. This move is part of a pattern of arms control treaties that Trump has abandoned, including the Open Skies Treaty with Russia, which allowed for joint aerial surveillance over each other's territories.