Russia says it is planning to develop new missile systems after both Russia and the US suspended their involvement in an arms control pact.
The Intermediate-Range Nuclear Forces (INF) Treaty banned both countries from using short- and medium-range missiles.
Last week, US President Donald Trump announced the US would leave the pact, which it has long accused the Russians of violating. Russia then did the same.
The moves have raised concerns about a new arms race.
The INF was signed in 1987, during the Cold War, to ease a crisis in which US and Soviet missiles were placed within range of European capitals.
