From Alexander Solzhenitsyn speaking at Harvard in 1978

From today's WSJ:

the most cruel mistake occurred with the failure to understand the Vietnam war. Some people sincerely wanted all wars to stop just as soon as possible; others believed that there should be room for national, or communist, self-determination in Vietnam, or in Cambodia, as we see today with particular clarity. But members of the U.S. antiwar movement wound up being involved in the betrayal of Far Eastern nations, in a genocide and in the suffering today imposed on 30 million people there. Do those convinced pacifists hear the moans coming from there? Do they understand their responsibility today? Or do they prefer not to hear? The American Intelligentsia lost its [nerve] and as a consequence thereof danger has come much closer to the United States. But there is no awareness of this. Your shortsighted politicians who signed the hasty Vietnam capitulation seemingly gave America a carefree breathing pause; however, a hundredfold Vietnam now looms over you. That small Vietnam had been a warning and an occasion to mobilize the nation's courage. But if a full-fledged America suffered a real defeat from a small communist half-country, how can the West hope to stand firm in the future?

Obviously, this seems to also apply to today.