re: #185 Desert Dog

And, Iran is/was supplying and training the scumbums that were launching deadly IED attacks on our guys. We should send them some molten lead back as repayment.

Right. We should be dealing with Iran ourselves; none of this “unclench your fists” bullshit.
Iranians in Iraq that are supplying weapons and aid to terrorists should be tried and executed as war criminals, not released.

But letting Kurds attack inside Iran for their own purposes is different. We are not (yet) trying to attack Iran, just stop its attacks in Iraq.
Now, if we wanted to use the Kurds as part of a combined attack on Iran, that would be different. But letting them go off on their own gives Iran an excuse to meddle in Iraq.