National Security Advisor Jake Sullivan spoke by phone today with Ibrahim Kalin, Spokesperson and Chief Advisor to the President of Turkey. Mr. Sullivan underscored the Biden Administration’s desire to build constructive U.S.-Turkey ties, expanding areas of cooperation and managing disagreements effectively. He conveyed the administration’s intention to strengthen transatlantic security through NATO, expressing concern that Turkey’s acquisition of the Russian S-400 surface-to-air missile system undermines alliance cohesion and effectiveness. Mr. Sullivan welcomed the resumption of exploratory talks between Turkey and Greece, and he expressed support for plans by United Nations Secretary General Guterres to resume talks on Cyprus. He underscored the Biden administration’s broad commitment to supporting democratic institutions and the rule of law. They agreed to cooperate on global challenges, such as the COVID-19 pandemic and climate change, and to consult closely on regional issues of mutual concern.