"If I do not say that you were defeated by the communists in Vietnam, I must modestly say that you did not win either. But you found an honourable way out. And at present, when our army lacks weapons, ammunition, helicopters, aircraft and B-52s (bombers), you ask us to do an impossible thing, like filling up the ocean with stones…"
January 1, 1970
https://en.wikiquote.org/wiki/Nguy%E1%BB%85n_V%C4%83n_Thi%E1%BB%87u