BELGRADE, Serbia (AP) — The United States has received Kosovo’s request to purchase Javelin anti-tank missiles, the U.S. ambassador to Serbia on Thursday told President Aleksandar Vučić, who expressed “deep disappointment.” The U.S. State Department said later Thursday that it approved the possible sale of the 246 missiles and related equipment to Kosovo for an estimated cost of $75 million. “This proposed sale will support the foreign policy goals and national security of the United States by improving the security of a European partner which is an important force for political and economic stability in Europe,” the U.S. State Department's Bureau of Political-Military Affairs said. A statement by Vučić’s office said U.S.