China’s drive to invest in Iran’s biggest undeveloped oilfield in return for gas supplies is being stymied by tough commercial negotiations, not the threat of more sanctions, Chinese oil officials said on Tuesday.

.S. and Iraqi forces killed an estimated 15 al Qaeda gunmen during a fierce battle south of Baghdad after the militants launched a major attack on recently formed neighborhood patrols, the U.S. military said on Tuesday.

Following are security developments in Iraq at 8:00 a.m. EST on Tuesday.* Denotes new or updated item. * HAWIJA – Gunmen killed a policeman and an Iraqi soldier when they opened fire on their car in central Hawija, 70 km (43 miles) southwest of the northern city of Kirkuk, police …