President Barack Obama and his national security team meet Sept. 29, 2009, in the Situation Room at the White House with Undersecretary of State Bill Burns, right, as Burns departs for P5+1 talks with Iran in Geneva on Thursday. Secretary of State Hillary Rodham Clinton is seated at center.

President Barack Obama and his national security team meet Sept. 29, 2009, in the Situation Room at the White House with Undersecretary of State Bill Burns, right, as Burns departs for P5+1 talks with Iran in Geneva on Thursday. Secretary of State Hillary Rodham Clinton is seated at center.