Russia condemned the U.S. on Sunday for announcing that it intended to pull out of a Reagan-era nuclear arms control treaty, terming the Trump administration’s move as “blackmail” to get other concessions from the country.

“We condemn the continuing attempts to achieve Russia’s concessions through blackmail, moreover in such an issue that has importance for international security and security in the nuclear weapons sphere [and] for maintaining strategic stability,” Russian Deputy Foreign Minister Sergei Ryabkov told the official news agency TASS.