The nuclear arms pact between the United States and Russia is set to go into effect Feb. 5.

Russian President Dmitry Medvedev signed the New START treaty Friday, after the deal was passed by both houses of Russia's Parliament.

The treaty limits the U.S. and Russia to 1,550 strategic warheads -- down from the 2,200 -- and re-establishes a system for arms monitoring that ended in December 2009.

The nuclear arsenal cuts will take place over the next decade.

The New START deal was approved by the U.S. Senate in December, despite hesitation from some Republicans.