The leaders of states do not exchange messages. Communication is exercised at the level of the Foreign Ministries and diplomatic missions, RA President Robert Kocharian said when commenting on the fate of the letter sent by Turkish Prime Minister Recep Tayyip Erdogan regarding the formation of a commission of historians for investigation of the Armenian Genocide issue. "I regret at the absence of diplomatic relations between Armenia and Turkey and I have already proposed to form an intergovernmental commission for normalization of relations between the two states but have not received any response so far," the Armenian leader said.