Turkey has carried out several incursions into northern Syria against the YPG and has been threatening a new incursion for months. It stepped up preparations last month after a deadly bomb attack in Istanbul it blamed on Kurdish militants.Turkey launched air strikes against YPG targets in November and President Tayyip Erdogan signalled a possible ground offensive. Turkey sees the YPG militia, the leading presence in the SDF, as the Syrian wing of the PKK, which is considered a terrorist organisation by Turkey, the United States and the European Union. What is your comment on Russia-Turkey relationship?

