Erdogan has visions of becoming more revered than Ataturk by restoring Ottoman Empire lands lost after WWI. Immediately after Trump told him we would pull troops from the area he began his incursion into Syria. Everyone needs to think back to when Syria broke out into civil war then was overtaken by ISIS, the same area that Turkey is marching into now was destabilized then and a prime target for Erdogan until US forces moved in to stabilize the area.