Could this be some half-baked attempt by the Turks to gain favor with the EU?
Believe it or not, the Turks have little territorial ambition. This reeks of the Turks being tired of dealing with Kurdish terrorists. Just because the Kurds are our allies in the war against the other Iraqi's doesn't mean that they should have the right to go create mischief with one of our other allies. Given all else we have been dealing with in Iraq, I doubt we have spent any time on policing Kurdish incursions into Turkey. A lot of folks need to grow up and act like adults in the region.