Three car bombs rocked Kirkuk this week killing seven people so far and injuring at least 75.  

The Kurds, with the imprimatur of the US, have spent the eight years since the invasion aggressively trying to secure Kirkuk, and its massive oil supplies, by moving Kurdish families into the province by the tens or hundreds of thousands (depending on whose numbers one believes).

They have intimidated Arabs and Turkomen, with Kurdish police forces who openly call excursions into Arab neighbourhoods and villages "terrorist hunting", and through kidnappings by the Kurdish secret police, Asaish.  

As a Sunni father - whose son was allegedly kidnapped by Kurdish intelligence forces - told me, as the US military withdraws from Kirkuk "within one hour there will be a fight and the Kurds will be expelled".