Treaties and other international acts series. 4300. Termination of military assistance furnished on grants basis, continuance of certain obligations, agreement between United States and Yugoslavia, amending memorandum of understanding of Oct. 18, 1954, and terminating agreements of Nov. 20 and 21, 1950, Apr. 17, 1951, Nov. 14, 1951, May 19 and 22, 1955, and Sept. 30, 1955, effected by exchange of notes, signed Belgrade Aug. 25, 1959; [entered into force Aug. 25, 1959].