"We've got to get the job done there," he said of Afghanistan. "And that requires us to have enough troops so that we're not just air-raiding villages and killing civilians, which is causing enormous problems there."
The comment drew a rebuke Tuesday from the campaign of Republican presidential candidate Mitt Romney.
"That is a very troubling remark on so many levels," said Romney spokesman Kevin Madden. "Most importantly, it's emblematic of Senator Obama's lack of experience for the job of commander-in-chief. But it's also an entirely inaccurate condemnation of the efforts of the men and women of the United States military who are serving in Iraq and Afghanistan."