
French soldiers chase down papers picked up by a small dust tornado that went right through their camp during a 10-day French Tactical Desert Survival Training Course on May 8, 2008 in the Djiboutian desert, Djibouti, Africa. (U.S. Air Force photo by Tech. Sgt. Jeremy T. Lock)

Scottish actress Tilda Swinton poses during a photo call for "Moonrise Kingdom" at the Cannes Film Festival in southern France in 2012. (AP Photo/Joel Ryan)

Scottish actress Tilda Swinton poses during a photo call for "Moonrise Kingdom" at the Cannes Film Festival in southern France in 2012. (AP Photo/Joel Ryan)

In this undated photo released by the Philadelphia Police Department, Philippe Jernnard of La Rochelle, France, arrested Wednesday March 20, 2013, at Philadelphia International Airport and charged with impersonating a pilot. (AP Photo/Philadelphia Police Department)

In this undated photo released by the Philadelphia Police Department, Philippe Jernnard of La Rochelle, France, arrested Wednesday March 20, 2013, at Philadelphia International Airport and charged with impersonating a pilot. (AP Photo/Philadelphia Police Department)

March 21: The scene is about 5 miles from Timbuktu. A suicide car bomber hit a checkpoint, injuring seven Malian soldiers. One other soldier was injured by friendly fire from French troops and died in hospital. Five insurgents were killed and one captured. An unknown number of insurgents escaped. (Photo by Yeah Samake)

**FILE** Kurds march with flags and a banner showing pictures of the three PKK (Kurdistan Workers Party) activists killed in Paris last month to show support for them and to their leader Abdullah Ocalan, imprisoned in Turkey, during a Feb. 16 2013, protest in Strasbourg, France. Kurds from France, Germany and Belgium gathered for the march. (Associated Press)

**FILE** Kurds march with flags and a banner showing pictures of the three PKK (Kurdistan Workers Party) activists killed in Paris last month to show support for them and to their leader Abdullah Ocalan, imprisoned in Turkey, during a Feb. 16 2013, protest in Strasbourg, France. Kurds from France, Germany and Belgium gathered for the march. (Associated Press)

This photo taken March 8, 2013, and released on March 14 by the French Army Communications Audiovisual office (ECPAD) shows a French air force helicopter patrolling over the Adrar region in northern Mali. France, Mali's former colonial ruler, started the campaign in January, fearing the region was becoming a terrorist haven. But the fighting has grown tougher and French forces aren't ready to pull out yet. (Associated Press/ECPAD)