Obama and Medvedev sign nuclear arms pact

Barack Obama, Dmitry Medvedev
U.S. President Barack Obama, left, and his Russian counterpart Dmitry Medvedev, right, shake hands at a press conference after signing the newly completed "New START" treaty reducing long-range nuclear weapons at the Prague Castle in Prague, Czech Republic Thursday, April 8, 2010.
Mikhail Metzel/ASSOCIATED PRESS

President Barack Obama and Russian President Dmitry Medvedev signed a nuclear treaty Thursday in Prague. The treaty, which has been dubbed "New START," will reduce the nuclear warheads of the two countries to 1,550 each over the next seven years. It must be ratified by the U.S. Senate and the Russian legislature.