WASHINGTON – U.N. Ambassador Susan Rice told lawmakers Tuesday that her initial explanation of the deadly Sept. 11 raid in Libya was wrong, but her concession failed to mollify three Republican senators who signaled they would oppose her possible nomination to be secretary of state.

In a closed-door meeting that Rice requested, the ambassador answered questions from Sens. John McCain, Lindsey Graham and Kelly Ayotte about her much-maligned explanations about the cause of the attack on the U.S. diplomatic mission in Benghazi, Libya, that killed Ambassador Chris Stevens and three other Americans. She was joined by acting CIA Director Michael Morell.

“The talking points provided by the intelligence community, and the initial assessment upon which they were based, were incorrect in a key respect: There was no protest or demonstration in Benghazi,” Rice said in a statement after the meeting. “While we certainly wish that we had had perfect information just days after the terrorist attack, as is often the case, the intelligence assessment has evolved.”