Over the weekend, President Recep Tayyip Erdoğan made clear that Turkey would not stand by to the establishment of a Kurdish state in northern Syria. On Monday, Turkey's National Security Council (MGK) discussed possible military operations across the border. There are question marks on whether this intervention would be legal under both Turkish law – if there is no vote in the parliament – and international law, without an explicit UN Security Council resolution.

The fight against Kurdish se...