Unbelievers are one nation. Some of them appear as the militants of the PKK, some others will appear in another form. The same holds true for ISIS (Islamic State of Iraq and Syria); it is a system that doesn’t abide by the Qur’an and it acts in line with the system of the idolaters. Eventually they will abide by the Mahdi (pbuh) and bend their knees before him. - Harun Yahya