The Obama administration secretly gave its blessing to arms shipments to Libyan rebels from Qatar last year, but American officials later grew alarmed as evidence grew that Qatar was turning some of the weapons over to Islamic militants, according to United States officials and foreign diplomats.
No evidence has emerged linking the weapons provided by the Qataris during the uprising against Col. Muammar el-Qaddafi to the attack that killed four Americans at the United States diplomatic compound in Benghazi, Libya, in September.
But in the months before, the Obama administration clearly was worried about the consequences of its hidden hand in helping arm Libyan militants, concerns that have not previously been reported. The weapons and money from Qatar strengthened militant groups in Libya, allowing them to become a destabilizing force since the fall of the Qaddafi government.
During the frantic early months of the Libyan rebellion, various players motivated by politics or profit — including an American arms dealer who proposed weapons transfers in an e-mail exchange with a United States emissary later killed in Benghazi — sought to aid those trying to oust Colonel Qaddafi.