This shouldn't be a question for us really.
After all, when there are terrorists in Palestine, we fully support Israel doing anything necessary and then some to stop it... even if it ultimately results in a net loss of regional stability.
Seems to me we should unabashedly back Turkey's decision to do the same in Iraq.

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"Man lives in the sunlit world of that which he believes to be reality. But unseen by most is an underworld, a place that is just as real... but not as brightly lit... A DARK SIDE!"
-opening from Tales From the Darkside