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A Jordanian student sits in front of a giant poster showing Jordan's King Abdullah II as he holds a placard bearing a portrait of late Jordanian pilot Maaz al-Kassasbeh on February 5, 2015 during a rally in the capital Amman against the Islamic state (IS) group after its militants burned alive the pilot. Jordan said its warplanes had launched new strikes against the IS group, after vowing a harsh response to the fighter pilot murder. AFP PHOTO / KHALIL MAZRAAWI (Photo credit should read KHALIL MAZRAAWI/AFP/Getty Images)

A Jordanian student sits in front of a giant poster showing Jordan's King Abdullah II as he holds a placard bearing a portrait of late Jordanian pilot Maaz al-Kassasbeh on February 5, 2015 during a rally in the capital Amman  against the Islamic state (IS) group after its militants burned alive the pilot. Jordan said its warplanes had launched new strikes against the IS group, after vowing a harsh response to the fighter pilot murder.  AFP PHOTO / KHALIL MAZRAAWI        (Photo credit should read KHALIL MAZRAAWI/AFP/Getty Images)