But "the fragility is less" than when he testified before Congress in May, the four-star Army general said in a speech that recapped his command of U.S. forces in Iraq that wrapped up this fall.
During his latest 19-month tour in Iraq, Petraeus executed the widely reported “surge” strategy that has brought more stability to the war-torn country.
But the general said the surge was more than the 30,000 additional U.S. troops and 135,000 Iraqi forces. The U.S. military also implemented a new counterinsurgency strategy that urged low-level commanders to take initiative. And he praised advances in intelligence gathering and cooperation among intelligence agencies.