Israeli Prime Minister Benjamin Netanyahu looked on as President Obama spoke this morning in the Oval Office of the White House. Saul Loeb /AFP/Getty Images hide caption

itoggle caption Saul Loeb /AFP/Getty Images

President Obama on Tuesday during a speech at the United Auto Workers' National Community Action Program Legislative Conference in Washington, D.C. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Despite international pressure, Iranian President Mahmoud Ahmadinejad listens to a technician during a visit to the Natanz Uranium Enrichment Facility, 200 miles south of the capital, Tehran, in 2008. Iranian President's Office/AP hide caption

itoggle caption Iranian President's Office/AP