By National Security Producer Jamie Crawford
If there's an area GOP presidential candidates seemed to agree on Saturday night, it's that President Barack Obama is not doing enough to contain Iran's nuclear ambitions.
Former Massachusetts Gov. Mitt Romney said Obama's Iran policy was his "greatest failing," and did not rule out military action against Iran in a potential Romney administration.
"If all else fails, if after all of the work we've done, there's nothing else we could do besides take military action. Then of course you take military action," he said when asked of his thoughts on a possible military strike.