In the mid-1960s, the KMT authorities in Taiwan saw the escalation of the Vietnam War as a golden opportunity to lobby the U.S. government to support its plans for “recovering the Mainland.” It made the case to Washington that the Vietnam War was a “proxy war,” which could only be solved by attacking the Chinese Communist regime. The Johnson administration, however, did not see the issue in these lines. On the contrary, it made very effort to avoid a military confrontation with the PRC. Therefore, it rejected the KMT’s proposals against Mainland China. Paradoxically, the Vietnam War, instead of serving as a possible chance for the KMT to retake the Mainland, led the U.S. government to rethink and adjust its hostile stance against Beijing. On the other hand, the Taiwan authorities sought all possible means to oppose America’s alleged “appeasement.” One of these ways was to work closely with the United States in Vietnam as an ally.