"Carefully weighing its forces and the forces of its internal and external enemies, seeing that there were weak spots in the so-called "unimaginable might" of the USA, the Party reaffirmed its view that the revolution would inevitably triumph providing good use was made of the nation's potential, the advantages issuing from military cooperation with the army and people of Vietnam, and the existence of the three revolutionary streams of our time. Hence, the Party chose an offensive strategy and worked out flexible and realistic revolutionary methods and ways of struggle. In view of the new situation, it decided to raise the banner of struggle for national liberation and against American imperialism."
January 1, 1970
https://en.wikiquote.org/wiki/Kaysone_Phomvihane