When his defense secretary at the time, Robert Gates, and his national security adviser, Tom Donilon, told him that he would be crazy to intervene in Libya — a country where, in Mr. Gates’s words, the United States had “no significant national interests” — Secretary of State Hillary Rodham Clinton and Mr. Donilon’s successor, Susan E. Rice, recalled the massacre of 800,000 Rwandans during the Clinton presidency, and said Mr. Obama could not allow another genocide in the making.
Reluctantly, Mr. Obama agreed, and ordered a bombing attack, alongside NATO and the Arab League. America could not stand by, he said later, because “that’s just not who we are.”