1.   To maintain nuclear equality with the United States, Russia might feel compelled to initiate an expensive program of building single warhead missiles.

2.   To get back to parity, Russia would have to build a number of single warhead missiles, such as the Tridents, something it is loathe to do.

3.   He also has suggested that Moscow could respond to U.S. moves by fitting multiple warheads to its single warhead missiles.

4.   Rethinaraj said India would arm its subs with nuclear warhead missiles, but not immediately.

5.   Putin has said Russia might respond to the U.S. moves by fitting its single warhead missiles with multiple warheads in order to overwhelm the defense system.

6.   Russian officials have warned that Russia might respond to the U.S. moves by fitting multiple warheads to its single warhead missiles.

7.   Under the Start II treaty, which took years to negotiate, Russia pledged not to deploy any land-based multiple warhead missiles.

8.   The treaty called for both sides to slash their long-range nuclear arsenals by about a third within a decade, and to eliminate land-based multiple warhead missiles.