Vigorous efforts are needed for Russia and the United States to reach a deal on extending the New START nuclear arms control pact before it expires next month, the Kremlin said on Tuesday.

New START (Strategic Arms Reduction Treaty), which was signed in 2010 and is set to expire on Feb. 5, limits the numbers of strategic nuclear warheads, missiles and bombers that Russia and the United States can deploy.

A failure to extend New START could fuel a potential arms race and tensions between Moscow and Washington, defense experts have warned. Kremlin spokesman Dmitry Peskov said Moscow and Washington were stepping up efforts to extend the pact because its expiration was rapidly approaching.

"Vigorous efforts are required to secure an extension," Peskov told reporters on a conference call. "The extension is in the interest of both countries, as well as the whole world."

Peskov made his comments a day after Nikolai Patrushev, secretary of Russia's Security Council, discussed extending the treaty in a phone call with new U.S. National Security Adviser Jake Sullivan.

The White House said last week that U.S. President Joe Biden will seek a five-year extension to New START, the last major nuclear arms pact between the United States and Russia.

The Kremlin had said that it would welcome efforts by the Biden administration to extend the pact.