<Li> August 1, 1962--Kennedy signs the Foreign Assistance Act of 1962, which provides "...military assistance to countries which are on the rim of the Communist world and under direct attack". </Li> <Li> October 1962--Operation Ranch Hand begins . U.S. planes spray herbicides and defoliants over South Vietnam until 1971 . </Li> <Li> January 3, 1963--NLF victory in the Battle of Ap Bac . </Li> <Li> May 8, 1963--Buddhists demonstrate in Huế, South Vietnam after the display of religious flags were prohibited, during the celebration of Vesak, Gautama Buddha's birthday; but, Catholic flags celebrating the consecration of Archbishop Ngô Đình Thục, brother of Ngô Đình Diệm were not prohibited . The police of Ngô Đình Cẩn, Diệm's younger brother, open fire, killing nine . </Li>

Who got us involved in the vietnam war