WASHINGTON - The Islamic State group’s takeover of the Iraqi city of Ramadi shows that Iraqi forces do not have the “will to fight,” the U.S. defense secretary says— the harshest assessment yet from a high-ranking Obama administration official about Iraqi fighters.

Iraqi forces outnumbered their opposition in the capital of Anbar province but failed to fight and pulled back from the city in central Iraq, Defense Secretary Ash Carter said on CNN’s “State of the Union” TV show, which aired Sunday. The Iraqis left behind large numbers of U.S.-supplied vehicles, including several tanks.

“What apparently happened is the Iraqi forces just showed no will to fight. They were not outnumbered,” Carter said. “In fact, they vastly outnumbered the opposing force. That says to me, and I think to most of us, that we have an issue with the will of the Iraqis to fight ISIL and defend themselves.”

The fall of Ramadi last Sunday has sparked questions about the effectiveness of the Obama administration’s approach in Iraq. That strategy mixes retraining and rebuilding the Iraqi army, prodding Baghdad to reconcile with the nation’s Sunnis and bombing Islamic State group targets from the air without committing American ground combat troops.

Carter defended the use of U.S. airstrikes as an effective part of the fight against the Islamic State group but said they are not a replacement for Iraqi forces defending their country.

“We can participate in the defeat of ISIL,” he said, using another acronym for Islamic State. “But we can’t make Iraq ... a decent place for people to live — we can’t sustain the victory, only the Iraqis can do that. And, in particular in this case, the Sunni tribes to the west.” (AP)