In the past few days, in the wake of ISIS's horrific burning of a Jordanian air force pilot, Jordan has adopted a highly combative tone toward the group.  It has matched this rhetoric with action: Its air force carried out dozens of strikes against ISIS targets on Thursday.  This is a significant increase from the number and pace of strikes that Jordan previously had undertaken as part of the coalition using force against ISIS in Syria.  Jordanian Foreign Minister Nasser Judeh stated that these airstrikes mark the beginning of his country's retaliation for the pilot's death, and he vowed to destroy ISIS.  In his words, "We are upping the ante. We're going after them wherever they are, with everything that we have.  But it's not the beginning, and it's certainly not the end."

Ashley S. Deeks, Is Jordan Attacking ISIS on a New Legal Theory?, Lawfare (February 7, 2015).