Obama has now been at war longer than any other American
president, and has overseen the use of military force in seven
countries—Afghanistan, Iraq, Syria, Pakistan, Libya, Yemen, and Somalia.
In the latter four countries, virtually all the force has come in the
form of unmanned drones executing suspected terrorists said to be linked
to al-Qaeda or its “associated forces.” That an antiwar president has
found the drone so tempting ought to be a warning sign.