What We're Following This Afternoon

Biden bows out: The vice president ended months of speculation, announcing he will not run for president in 2016. “Unfortunately, I believe we’re out of time, the time necessary to mount a winning campaign for the nomination and the presidency,” he said at the Rose Garden. As Russell reports, “his camp repeatedly left allies and reporters alike with the impression that he would make a dramatic entrance into the race.”

A supreme assent: Ayatollah Ali Khamenei, Iran’s supreme leader, has approved the nuclear deal brokered with six world powers this summer—with certain conditions. As Marina reports, he made the order in a letter to President Hassan Rouhani.

Controversy over Holocaust remarks: Israeli Prime Minister Benjamin Netanyahu’s comment that the grand mufti of Jerusalem inspired Adolf Hitler’s “Final Solution” has set off a firestorm of criticism. As Adam reports, Germany, in response, reiterated its culpability for the deaths of 6 million Jews.

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Our headlines from the morning are here.