In January 2004 the US government declared the Kurdistan Workers Party a terrorist organization under US law. The PKK is a Kurdish political and military organization which from 1984 to 2013 fought an armed struggle against the Turkish state for cultural, political and civil rights.
As of august 2014 the US government is assisting the Iraqi government and the regional government in defending the city of Erbil (Hewler), where American diplomats and personnel are stationed. The US government has also attempted to help Yezidi refugees trapped in the Shengal mountains.
The PKK has been a partner in defending Iraq and Kurdistan against the Islamic State (IS), thus the US government should remove the PKK from the list of international terrorist organizations - immediately.