But we may take action to maintain the integrity of Iraq.
Iraqi integracy is not worth the paper the Europeons wrote it on.
Iraq is a artificial post war construct of the europeons, we need to leave it to the people who actually live there to decide where the borders will fall. If it spilts up along ethnic lines the short term pain will be worth the long term stability.
And no, as long as Turkey makes no long term incursions into Kurdistan, the US isn't going to attack a NATO country in order to do the fighting for an islamic terror group, under the pretence of Iraq integrity or no.