(ANSA) - BELGRADE, 04 SET - French President Emmaniel Macron and German Chancellor Olaf Scholz have sent a joint letter to Serbian President Aleksandar Vucic urging him to show "utmost determination and readiness" in taking "tough decisions" that can "advance the dialogue between Kosovo and Serbia under the auspices of the EU." In the letter, which was announced today by the presidency in Belgrade, Macron and Scholz emphasize that they took this decision "at a time of decisive importance for security on the European continent and stability in the Western Balkans region." "We are convinced that, in light of Russian aggression against Ukraine, we must further intensify our efforts to make the European perspective of the Western Balkan countries a reality, and long-standing bilateral and regional disputes are resolved." For the two European leaders, "the full normalization of relations between Kosovo and Serbia is of crucial importance for the Western Balkans." "The recent tensions have shown the urgent need for constructive steps forward, both at the practical and political level," say Macron and Scholz, who have therefore instructed their respective foreign and security policy advisers to lend direct support to EU Special Envoy Miroslav Lajcak and accompany him on his missions to Kosovo and Serbia with the aim of facilitating progress in the negotiation process. (ANSA).