EU foreign policy chief Federica Mogherini says: “I am worried about this.”

Mogherini told reporters in Brussels on Monday that international efforts in Syria are supposed to be “aiming at de-escalating the military activities and not escalating them.”

She urged Turkey, Russia and Iran to guarantee that conflict “de-escalation zones” are established as promised, to “guarantee that that is what happens on the ground.”

Turkey’s President Recep Tayyip Erdogan announced on Sunday the capture of the town of Afrin, previously controlled by the Kurdish militia known as the People’s Defense Units, or YPG. The call came as Turkey’s state-run news agency said a booby-trap bomb reportedly left by Syrian Kurdish fighters in the town of Afrin had killed 11 people — seven civilians and four Turkish-backed fighters. The town was taken nearly two month after Turkey launched its offensive to clear Afrin and surrounding districts of a Syrian Kurdish militia that Ankara considers to be a "terrorist" group, allied with Turkey's outlawed Kurdish rebels. The YPG had come to control large swaths of northern Syria, including Afrin, in the course of the eight-year Syrian war, particularly through fighting against the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) group in an US-backed umbrella organisation named Syrian Democratic Forces (SDF). The Britain-based Syrian Observatory for Human Rights said Monday the looting began on Sunday, after the Turkish and allied Syrian forces marched into the town center and raised their flags there — nearly two months after the offensive on the Kurdish enclave started.
The Turkish-backed Free Syrian Army rebels loot the Syrian city of Afrin.