Arab League foreign ministers agreed to confront the Islamic State on Sunday and cooperate with international, regional and national efforts to combat militants who have overrun swathes of Iraq and Syria, according to The Associated Press.

Arab League chief Nabil al-Arabi told the session that the rise of the group in Iraq challenged not merely the authority of the state but "its very existence and the existence of other states" and called for a decisive resolution to confront terrorism militarily, politically, economically and culturally, the AP reported.

The Arab League also endorsed in the closing statement of its meeting in Cairo a UN Security Council resolution passed last month calling on member states to "act to suppress the flow of foreign fighters, financing and other support to Islamist extremist groups in Iraq and Syria," the AP reported.

Baghdad had earlier submitted a draft resolution endorsing its own efforts to confront militants who have seized large areas for a cross-border caliphate and to condemn Islamic State's actions as war crimes and crimes against humanity, according to the AP.

Diplomatic sources said before the meeting that Arab foreign ministers were set to endorse a U.S. aerial campaign against the group and Egypt's official Mena news agency said the ministers would agree to coordinate with the United States, the AP reported.

President Barack Obama declared last week that the United States was ready to "take out" leaders of Islamic State, and said NATO allies were prepared to join military action against a movement that he labeled a major threat to the West, according to the AP.

American warplanes carried out four strikes against Islamic State militants threatening western Iraq's Haditha Dam early on Sunday, witnesses and senior officials said, broadening Washington's campaign against the fighters, the AP reported.