06/28/1966
https://www.presidency.ucsb.edu...
"If that is what they choose, then we shall win a settlement on the battlefield."
"Hard choices are going to have to be made in the next few days."
"If their position changes--as we fervently hope it will--then we in the United States and our allies are prepared to immediately meet them anywhere, any time, in a spirit of flexibility and understand..."
"The Communists have made it clear that up to now, thus far, they are unwilling to negotiate or to work out a settlement except on the battlefield."