Briefing reporters ahead of a congressional hearing Wednesday, State Department officials provided their most detailed rundown of how a peaceful day in Benghazi devolved into a sustained attack that involved multiple groups of men armed with weapons such as machine guns, rocket-propelled grenades, and mortars.
Asked about the administration's initial - and since retracted - explanation linking the violence to protests over an anti-Muslim video circulating on the Internet, one official said: "That was not our conclusion." He called it a question for "others" to answer, without specifying. The officials spoke on condition of anonymity because they were not authorized to speak publicly on the matter.
The attack has become a major issue in the presidential campaign, featuring prominently in Republican candidate Mitt Romney's latest foreign-policy address Monday. He called it an example of President Obama's weakness in foreign-policy matters, saying: "As the administration has finally conceded, these attacks were the deliberate work of terrorists."
The administration counters that it has provided its best intelligence on the attack, and that it refined its explanation as more information came to light. But five days after the attack, Obama's ambassador to the United Nations, Susan Rice, gave a series of interviews saying the administration believed the violence was unplanned and that extremists with heavier weapons "hijacked" the protest and turned it into an outright attack.
She has since denied trying to mislead Congress, and a concurrent CIA memo that was obtained by the Associated Press cited intelligence suggesting the demonstrations in Benghazi "were spontaneously inspired by the protests at the U.S. Embassy in Cairo" and "evolved into a direct assault" on the diplomatic posts by "extremists."
Alongside defining the nature of the Benghazi attack, Congress is looking into whether adequate security was in place.
According to an e-mail obtained Tuesday by the AP, the top State Department security official in Libya, Eric Nordstrom, told a congressional investigator that he had argued unsuccessfully for more security in the weeks before Ambassador Chris Stevens, a State Department computer specialist, and two former Navy SEALs were killed. Department officials instead wanted to "normalize operations and reduce security resources," he wrote.