Iraq

The massacre at Camp Speicher, near Tikrit, was carried out by fighters from so-called Islamic State (IS) as it seized territory across northern Iraq.

Outrage over the massacre of the mostly Shia cadets helped mobilise Iraq's Shia militias in the fight against IS.

IS militants released photos and video documenting the massacre in 2014. Mass graves were found a year later.

The graves were discovered when Iraqi government forces recaptured the area.

Four hostages -- employees of the Iraqi North Oil Company -- were taken captive after four attackers, believed to be wearing suicide vests, stormed the Bai Hassan oil field northwest of Kirkuk on Sunday, the source said.

One of the attackers blew himself up when security forces responded. The other attackers were later killed by security forces.

The ISIS-affiliated Amaq news agency released a statement claiming responsibility for the attack, which was widely circulated by the terror group's supporters on social media networks.

Speaking to reporters on a flight to Warsaw, Poland, for a NATO meeting, Carter said the review will "see if there are any lessons learned."

One aircraft flying air support missions over Al-Bukamal during the recent fighting there was called off and diverted to strike at a massive convoy of suspected ISIS militants that had been observed to be trying to leave the southern outskirts of Fallujah, according to a senior U.S. official. Several aircraft were diverted from various patrols in different parts of Iraq, but only one was taken away from the Al-Bukamal battle.

Police Brig. Hangwani Mulaudzi said Tuesday that there were "rumors" that the cash was headed for the Islamic State group but that authorities had so far not found any "tangible evidence."

Islamic State extremists control parts of Syria and Iraq and have welcomed thousands of foreign fighters into their ranks.

South African tax authorities say five passengers carrying the cash were detained while boarded an Emirates flight at Johannesburg's main international airport on Aug. 28.

"Victory at Beiji is a crucial step toward ending Daesh's presence in Iraq," Haider al-Abadi told military and militia commanders during a visit to the area the day before, using an Arabic acronym for the extremist group.

The military retook the town of Beiji from the IS group in November, but government forces and allied Shiite militiamen there have come under mounting pressure in recent weeks. Militants now control up to half of the town and oil refinery to the north, a top commander told The Associated Press.

Sabah Al-Karhout, president of the Anbar Provincial Council, told The Associated Press the ambushes took place Friday west of the provincial capital, Ramadi, but said he had no more details. There was no immediate word from federal authorities or the Islamic State group.

The Islamic State group controls much of the vast Anbar province, including Ramadi and the city of Fallujah.

The deadlier of Monday's two attacks happened near the provincial capital, Baquba, located 35 miles (60 kilometers) northeast of Baghdad. Police said a suicide car bomb tore through a marketplace, killing at least 35 people and wounding 72.

The Islamic State group claimed responsibility for the attack, in a statement distributed on Twitter, saying an Iraqi fighter named Abdullah al-Ansai detonated his explosives-laden vehicle in the predominantly Shiite neighborhood of Huwaydah.

The coalition had no immediate comment.

The report by Airwars, a project aimed at tracking the international airstrikes targeting the extremists, said it believed 57 specific strikes killed civilians and caused 48 suspected "friendly fire" deaths. It said the strikes have killed more than 15,000 Islamic State militants.

While Airwars noted the difficulty of verifying information in territory held by the IS group, which has kidnapped and killed journalists and activists, other groups have reported similar casualties from the U.S.-led airstrikes.

A statement from the office of Kurdish President Massoud Barzani said the Kurdish Workers' Party, known as the PKK, "should withdraw its fighters from the Kurdish region so to ensure the civilians of Kurdistan don't become victim of that fighting and conflict."

The statement also condemned Turkey for bombing civilians, following reports that civilian homes were damaged in airstrikes in northwestern Iraq. The statement calls on both sides to resume peace talks.