A year ago, six nations forged a temporary agreement with Iran to limit its nuclear program in exchange for a partial lifting of economic sanctions. That led to ongoing negotiations, which are set to expire next Monday. Russia, Israel, Saudi Arabia and Western Europe all have major stakes in the outcome, which could re-shape the political contours of the Middle East. President Obama and Iran’s President Rouhani both want an agreement, but Republicans could pass new sanctions or the Supreme Leader could kill any deal. We hear about possible benefits, potential risks and political consequences.