[1wd]

The quoted part can be found on Google Books in "The Memoirs of Richard Nixon -- By Richard Nixon". The context there does not mention the word "nuclear" though, only "increased force". Some other quotes from there:

"My real concern was that these highly publicized efforts aimed at forcing me to end the war were seriously undermining my behind-the-scenes attempt to do just that."

"What counts is whether the demonstrations, regardless of intention, does in fact give encouragement to Hanoi and thereby presumably prolongs the war."

"If a President - any President - allowed his course to be set by those who demonstrate, he would betray the trust of all the rest. Whatever the issue, to allow government policy to be made in the streets would destroy the democratic process."

"I thought about the irony of this protest for peace. It had, I believed, destroyed whatever small possibility may still have existed of ending the war in 1969."

[xerophyte12932]

These are very interesting considering how they show the xact opposite side of the OP's debate.

I find it very amusing when articles quote someone to support their arguments even though the person actually disagrees with their PoV