There are all kinds of Kurds. Commie Kurds, regular impartial Kurds, Pro-Iranian Kurds, and so on. But this seems to make things a bit clearer:
The offical, speaking on condition of anonymity, refused to elaborate on evidence linking the men to Ansar al-Islam, a group which other US officials have said is linked to both al Qaeda and possibly Saddam Husseins government in Iraq.