** FILE ** U.S. Marines monitor Eager Lion multinational military maneuvers in Quweira, 186 miles south of Amman, Jordan, June 18, 2013. Jordan's prime minister says the country is hosting 900 U.S. military personnel to bolster its defence capabilities against potential threats from the Syrian civil war.

Photo by: Maya Alleruzzo

** FILE ** U.S. Marines monitor Eager Lion multinational military maneuvers in Quweira, 186 miles south of Amman, Jordan, June 18, 2013. Jordan's prime minister says the country is hosting 900 U.S. military personnel to bolster its defence capabilities against potential threats from the Syrian civil war.