Caitlin Hayden, Obama’s National Security Council spokeswoman, said the U.S. would continue to consult with Britain, but Obama would make decisions based on “the best interests of the United States.”
It was not certain the U.S. would have to act alone. France announced that its armed forces “have been put in position to respond” if President Francois Hollande commits forces to intervention against Syria. Hollande does not need French parliamentary approval to launch military action that lasts less than four months.
Obama discussed the situation in Syria with House Speaker John Boehner, R-Ohio, who wrote to the president earlier this week seeking a legal justification for a military strike and the objectives of any potential action.
Assad, who has denied using chemical weapons, vowed his country “will defend itself against any aggression.”
Some of the U.N. chemical weapons experts will travel directly from Syria tomorrow to different laboratories around Europe to deliver “an extensive amount of material” gathered, U.N. spokesman Farhan Haq said. While the mandate of the U.N. team is to determine whether chemical agents were used in the attack, not who was responsible, Haq suggested the evidence — which includes biological samples and witness interviews — might give an indication of who deployed gases.
Obama and other top officials have not revealed definitive evidence to back claims that Assad used chemical weapons on Syrians. U.S. officials say the intelligence assessments are no “slam dunk,” with questions remaining about who actually controls some of Syria’s chemical weapons stores and doubts about whether Assad himself ordered the strike.
The officials spoke on condition of anonymity because they were not authorized to discuss the intelligence publicly.
Despite shortcomings in the intelligence, the White House signaled urgency in acting, with Earnest, the White House spokesman saying the president believes there is a “compressed time frame” for responding.