Iraq War II
The PKK is begging the Turks to invade. I haven't put enough thought into why they think that would be good for them. Maybe they think that if America and Turkey are no longer close allies, they would have an easier time getting the Kurdish part of Turkey to break away and form an independent Kurdistan?
Anyway, the PKK is single handedly destabilizing the only stable part of Iraq. More unintended (although foreseeable) consequences of the Bush war "plan".