While the Turks are within their rights to strike at an enemy combatant force with whom they have been at war with since the 1980s, the U.S. is not the sovereign power in Iraq; officially, sovereign power rests with the Iraqi government in Baghdad, and reports indicate that the government, especially the Kurdish members of the government are quite angry at this attack and at U.S. complicity.

While the U.S. can claim that it is aiding a fellow NATO member defend itself, and that the PKK is considered a terrorist group, allowing the Turks to strike inside Iraq does open up the question of what the Bush Administration would do if Iran launched a similar cross-border strike against their own Kurdish rebels who also use northern Iraq as a base.

U.S. Helps Turkey Hit Rebel Kurds In Iraq: Intelligence Role Could Complicate Diplomacy–Washington Post Staff, December 18, 2007

Turkey’s U.S.-Backed Strike in Iraq–Time, Dec. 17, 2007