January 1964 to June 1964: U.S. response to the Pathet Lao/North Vietnamese offenses of February and May; U.S. support for Sovanna Phouma during the April coup; U.S. photo reconnaissance and the retaliatory attack of June --
June 1964 to January 1965: U.S. support of Operation Triangle; diplomatic efforts to revive the Geneva Settlement; the beginnings of the air war against infiltration through the Laos Panhandle --
January 31, 1965 to December 1967: demise of the rightists; controversy over interdiction strategies; Souvanna's visits to the United States --
January to December 1968: the fall of Phou Pha Thi; reassessment of policy; Laos and the Paris peace talks; increased bombing in Laos.
