How Does A Country Reduce Its Nuclear Arms?

The new START treaty will require the United States and Russia to reduce each country's stockpile of long-range nuclear warheads by about 30 percent. It would also reduce the number of nuclear submarines, missiles and bombers each country can posses. So how does a country reduce its arms? NPR's Robert Siegel speaks with George Perkovich, director of the Nuclear Policy Program at the Carnegie Endowment for International Peace, about how the United States and Russia will reduce their nuclear weapons to comply with the treaty.

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