Success of the domino theory looked more likely in Asia than in Europe.

“诺理论”看来更可能在亚洲，而不是在欧洲成功。

Like Truman and Eisenhower, John F. Kennedy believed in the domino theory

肯尼迪和杜鲁、豪威尔一样，信奉诺理论。

The domino theory is not a joke.

诺骨牌理论不是胡扯的。

He's particularly concerned by the domino theory and the fact that if you push over Vietnam, then Laos and Cambodia will go and the rest of Southeast Asia.

他诺骨牌理论尤为关注， 该理论认为一旦越南倒下，老挝和柬埔寨也将随之沦陷， 进而影响整个东南亚地区。

Right, because to be clear on what you're saying in your account, what begins as ostensibly this containment, this domino theory, becomes much more about the president's own reputations.

好的，因为要明确你叙述中的观点，这场战争起初看似是为了遏制和诺骨牌理论，但实际上更关乎总统个的声誉。