SAIGON — Sen. Barry Goldwater said Wednesday he thinks President Nixon might resume bombing North Vietnam if the Communists close the road to peace through talks in Paris, and he called for a resumption of the bombing to "win the war."

In an earlier interview with Pacific Stars and Stripes, the Arizona Republican said he knew of the alleged "Pinkville" massacre about a year ago but blasted what he termed a "concentrated effort in the States to downgrade and to discredit the man in uniform and the military services."

Goldwater, who flies to Bangkok Thursday, is on a tour of Air Force Military Affiliate Radio System (MARS) stations in Vietnam and Thailand.

On the bombing, Goldwater said "My personal feeling is that we're not going to win this war until we stop the flow of supplies (to the enemy) at the northern end of the (Ho Chi Minh) Trail.

"And I don't think the President has closed the door on this action. He hasn't been too specific about it but I have a feeling some action might come if the peace efforts that he's been making and that we're making in Paris fail to come to fruition."

Asked if President Nixon has any plans to resume the bombing, the defeated 1964 GOP presidential candidate said "I wouldn't put anything out of bounds. I know this man (Nixon), and I know him well, and he is a man of patience but not infinite patience, and he is not going to be a President who loses a war."

But, Goldwater said later, he has "no indications" that the President has immediate plans for resuming the bombing.

Goldwater said he agreed "100 percent" with a recent statement by Gen. William Westmoreland, Army chief of staff and former commander of U.S. forces in Vietnam, that the war would be over now if the bombing of North Vietnam had not been halted.

Goldwater made it clear that he supports the President's current policy in Vietnam.

Goldwater revealed that he had advised President Nixon in August to put a limitation on the Paris peace talks and that if the deliberations in Paris didn't show any progress by Nov. 1, to start bombing Haiphong and North Vietnam "all the way up" with B52 strikes.

He said he first became aware of the current anti-military sentiment on the part of some Americans five or six years ago and that a recent series of "unfortunate incidents" such as the Green Beret case and the "so-called Pinkville massacre which is being tried on TV and in the press even before the court-martials" have been exploited as part of the anti-military campaign.

Goldwater admitted he first learned of the alleged Song My massacre "about a year ago" when he and other members of congress received letters from Ronald Lee Ridenhour, a native of Phoenix and a former Americal Div. soldier in Vietnam.

The 60-year-old senator said that he was troubled by Ridenhour's letter and had doubts about the former soldier's allegations. Goldwater said he turned the letter over to the Department of the Army for investigation. He described Ridenhour as a "fine young man, not the malicious type."

"I still don't believe it (the massacre)," Goldwater said. "Nothing happened that wouldn't be called for by a military decision.

"I'm skeptical and can't believe American men would do such an unwarranted, malicious thing."