The Turkish downing of a Russian jet that crossed into its territory while bombing targets in Syria complicates even further the play of contraries in an already bewildering set of Mideast conflicts. The episode introduces a fresh tension that could well pit NATO, of which Turkey is a member, against what Gopalkrishna Gandhi calls a fledgling new NATO, or New Anti-Terror Organization, that French President François Hollande is trying to organize globally in the wake of the Paris attacks.