"the policeman is there to preserve disorder."
http://www.alternet.org/world/us-policy-killing-kurds
if the kurds are getting too much influence, that must be countered because the goal is not to end the conflict but to continue it. any time anybody gets an advantage, america will step in to reverse it. this is the american goal, here - to ensure that the region is in a state of constant stalemate and perpetual warfare that nobody can possibly break out of.
once the turks have taken the kurds down a notch, the amercans will need to pull the turks back and help the kurds regain the ground that was just lost.
they don't want peace. they want an unending war.