Turkey, a NATO member, authorised protective incursions in Syria and Iraq to protect itself from Islamic State.
Naturally Iran is worried and already announced its unhappiness.
Plus a recent poll says that at least 1.73% Turkish support Islamic State (approximately one million people).
And the battle for Kobani (Kurdish enclave) it is actually defining also the relationship Kurdish- Turks and Kurdish-US (also in Iraq).
As usual, messier by the day