But still we ask: Who is Barack Obama?
On the last night of April in 2011, Obama put on his black tie for the annual White House Correspondents' Association dinner at the Washington Hilton. Obama was in good form that night; he congratulated Donald Trump, then considering a run for the Republican nomination, on his recent decision to fire actor Gary Busey on "Celebrity Apprentice."
"These are the kinds of decisions that would keep me up at night," Obama said, to peals of laughter. "Well-handled, sir. Well-handled."
What his audience didn't realize — what few people knew at that moment — was that Obama had, just hours before, given the go-ahead for the mission that would claim the life of America's Public Enemy No. 1, Osama bin Laden. It was a huge gamble, perhaps the biggest of Obama's presidency.
"If that failed, it really would have been a political disaster," says historian Robert Dallek, who has written books on presidents from Franklin Roosevelt to Ronald Reagan. "It would have been reminiscent of Jimmy Carter and the helicopter going down in the Iranian desert" in an ill-starred effort to rescue American hostages from Tehran.
