U.S. strikes convoy of Islamic State leaders in Iraq BAGHDAD - U.S. warplanes launched airstrikes on what U.S. officials said was a gathering of Islamic State commanders near the militant-held city of Mosul on Friday, in one of the most prominent assaults on the Islamist group's leadership since the air war started here in August. A spokesman for U.S. Central Command could not confirm if Islamic State leader Abu Bakr al-Baghdadi was at the gathering targeted on Friday. The strikes destroyed a convoy of 10 armed trucks, the spokesman, Col. Patrick Ryder, said. According to CENTCOM, the vehicles appeared to be pickups with gun mounts. "We cannot confirm if ISIL leader Abu Bakr al-Baghdadi was among those present" in the convoy destroyed near Mosul, Ryder said, using an alternative acronym for the Islamic State. Mosul, a city of roughly 1.5 million people, was seized by Islamic State militants in June. Baghdadi declared an Islamic caliphate from that northern Iraqi city in his first appearance as the group's leader on July 5. Their military victory in Mosul granted the Islamic State command over one of Iraq's largest cities, where they have imposed a strict version of sharia law on the local population, residents say. Baghdadi, an Iraqi born in Samarra, is said to have been working as an Islamic preacher when the United States invaded Iraq in 2003. He then turned to militancy, and was detained by U.S. forces at Camp Bucca for four years. It was there that Baghdadi is believed to have met and trained with al-Qaeda operatives, eventually rising to lead the Islamic State. His militant group controls vast tracts of land that straddle the border between Iraq and Syria. Also Friday, U.S. warplanes struck several targets in Iraq's western Anbar province, Ryder said. The strikes, near al-Qaim at the Syrian border, destroyed an Islamic State vehicle and several checkpoints, he said. On Saturday, Iraqi government officials and tribal chiefs in Anbar reported fresh U.S. airstrikes near al-Qaim that they said also targeted and killed some of Baghdadi's top aides. The raids could not be confirmed. The Islamic State militants have overrun large areas of Anbar in recent weeks and control a majority of the province. Anbar was the epicenter of the Sunni insurgency against U.S. troops during the Iraq war, but local tribal leaders eventually turned against the extremists. Those same Sunni tribesmen are requesting U.S. assistance to beat back Islamic State advances in Anbar, where the Islamist militants have massacred members of tribes resisting their rule. Since late October, the Islamic State has executed hundreds of members of the Albu Nimr tribe in Anbar, tribal leaders said. The Obama administration Friday authorized the deployment of an additional 1,500 troops to Iraq, including trainers and advisers who will specifically deploy to Anbar province. Missy Ryan in Washington and Mustafa Salim in Baghdad contributed to this report.