U.S. warplanes have carried out almost 90 percent of airstrikes against the Islamic State of Iraq and Syria (ISIS) while Arab and European countries all together carried out the remaining 10 percent, U.S. defense officials said on Monday.

A total of about 2,000 air raids have been launched against the militant group, of which the U.S. Air Force carried out 1,768 (88.4 percent), Agence France-Presse reported citing U.S. defense officials.

The report shed light on the dominant role the United States is playing among coalition countries, which include about 50 countries in the fight against the militant group. […]