President Obama is in Prague today, where he signed the START Treaty along with Russian President Dmitry Medvedev. The treaty will reduce the number of nuclear warheads between the two countries by almost 40 percent, from 2,700 to 1,550.
Yesterday in Vienna, President Obama’s strategy of engagement with Iran may have resulted in a big first step toward stopping that country from getting a nuclear weapon. Iranian negotiators agreed to a draft deal that would send 75 percent of Iran’s low-enriched uranium to Russia. Iran would, in turn, receive highly enriched uranium in a form that would be useful for nuclear power but not nuclear warheads. We speak to BBC Tehran correspondent Jon Leyne for an on-the-ground look at the news. We also speak with Alex Glaser, a physicist who looks at nuclear proliferation issues at Princeton's Woodrow Wilson School of Public and International Affairs, and Will Tobey, a senior fellow at Harvard’s Belfer Center for Science and International Affairs.
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