The Russian and U.S. leaders, Dmitry Medvedev...
The announcement came after a phone conversation between the two leaders, which took place earlier on Friday.
"The presidents thanked each other for their cooperation. Medvedev said this treaty reflected the balance of interests of both states," Medvedev"s press secretary Natalya Timakova said.
"The negotiations did not always go smoothly, but the constructive attitude of negotiators and active participation of the Russian and U.S. presidents allowed us to do a huge amount of work on a tight schedule and to bring the treaty close to being signed," Timakova quoted the Russian president as saying.
The strategic arms pact stipulates that the number of nuclear warheads is to be reduced to 1,550 on each side, the White House said.
The number of delivery vehicles must not exceed 800 on each side. Under the deal, strategic offensive weapons are to be based solely on the national territories of Russia and the United States.