The U.S. hopes to persuade Russia to enter talks on further nuclear arms cuts after the ratification of the new START treaty on Thursday, U.S. Fox News reported late on Monday.
"The White House hopes to overcome Russia's expressed reluctance to move beyond START, especially if it means cutting Moscow's arsenal of tactical, or short-range nuclear arms," the source said.
It added that U.S. President Barack Obama is expected to announce a new arms strategy on Tuesday which will limit the country's use of nuclear weapons.
The presidents of Russia and the U.S., Dmitry Medvedev and Barack Obama, have agreed to sign the new arms reduction treaty in Prague on April 8 after months of negotiations.
The treaty will replace the 1991 Strategic Arms Reduction Treaty (START), the cornerstone of a post-Cold War arms control setup, which expired on December 5, 2009.
The strategic arms pact stipulates that the number of nuclear warheads is to be reduced to 1,550 on each side, while the number of delivery vehicles must not exceed 800 on each side.
Under the deal, which will have a validity term of ten years unless it is superseded by another strategic arms reduction agreement, strategic offensive weapons are to be based solely on the national territories of Russia and the United States.