The United States will arm the Kurds in Syria, a decision announced on 9 May. Turkey reacted indignantly. On May 11, Turkish President Recep Tayyip Erdoğan urged Washington to “come back to his footsteps”, but more or less at the same time the US military confirmed that “very soon” will begin delivering mortars, heavy machine guns, light weapons and vehicles armored. For Turkey, the emergence of autonomous Syrian Kurdistan is therefore a huge problem. Turkey, in fact, can not do anything to prevent it. Ankara can not approach Russia more than it has already done, because it can not break with the Americans at a time when its relations with the European Union are at the lowest level.