One China Policy
The formula that there is only one China, used by Beijing and Washington to mean different things, framing the Taiwan dispute.
The One China policy is the idea that there is only one China in the world, not two. Nearly every country that deals with China accepts some version of this idea. But the phrase means different things depending on who says it. Beijing's version holds that Taiwan is part of the People's Republic of China and always has been. Washington's version acknowledges that Beijing holds this position, but does not agree with it, and takes no formal stance on whether Taiwan belongs to China. The entire Taiwan dispute, one of the most dangerous standoffs in the world, sits in the gap between those two meanings. The arrangement has held since 1979 because both sides have chosen not to force the phrase to mean only one thing.
How the One China formula took shape
The question goes back to 1949. The Chinese Civil War ended that year with Mao Zedong's Communist forces taking the mainland and Chiang Kai-shek's Nationalists retreating to Taiwan. Both governments claimed to be the rightful government of all of China, and for the next two decades the United States recognized Chiang's government in Taipei as that government.
The shift began with Richard Nixon's visit to Beijing in February 1972, the first by a sitting American president. Nixon and Premier Zhou Enlai issued the Shanghai Communiqué. In it the United States "acknowledges that all Chinese on either side of the Taiwan Strait maintain there is but one China and that Taiwan is a part of China." The word "acknowledges" was chosen with care. It noted what the Chinese themselves said without the United States endorsing it.
Seven years later, on January 1, 1979, President Jimmy Carter formally normalized relations with Beijing. The United States recognized the People's Republic of China as the sole legal government of China, cut official diplomatic ties with Taipei, and again acknowledged, without accepting, the Chinese position that Taiwan is part of China. That same year Congress passed the Taiwan Relations Act, which committed the United States to sell Taiwan defensive weapons and to treat any use of force against it as a matter of grave concern. The result was a deliberate contradiction: Washington recognized Beijing as China's government while arming the island Beijing claimed to own.
What is the difference between the One China policy and the One China principle?
Beijing uses the term "One China principle" for its position. The principle makes three claims: there is only one China, the government in Beijing is that China's sole legal government, and Taiwan is part of China. Beijing requires every country that wants diplomatic relations to accept some version of the principle. Any government that recognizes the People's Republic must cut official ties with Taipei.
The United States calls its own position the "One China policy." It recognizes the government in Beijing but does not recognize Beijing's claim of sovereignty over Taiwan. The US acknowledges China's position and does not challenge it, but it also does not endorse it. This is not a technicality. The difference between saying "we acknowledge your claim" and "we accept your claim" is the foundation of the whole arrangement.
In practice, the United States keeps unofficial relations with Taiwan through the American Institute in Taiwan and sells it billions of dollars in weapons. It insists that Taiwan's future must be settled without force and with the agreement of the Taiwanese people.
What is strategic ambiguity?
The United States does not say whether it would send troops to defend Taiwan if China attacked. This posture is called strategic ambiguity. It is meant to work in two directions at once: it deters Beijing from invading, because the US military might intervene, and it discourages Taiwan from declaring formal independence, because the United States might not back it.
Taiwan governs itself, holds democratic elections, and maintains its own military. But it stops short of formally declaring itself a separate country. Beijing has said that a formal declaration of independence by Taiwan would mean war.
How many countries recognize Taiwan?
When the United Nations voted on Resolution 2758 in October 1971, it seated the People's Republic of China and expelled the representatives of Chiang Kai-shek's government. The resolution settled who represented "China" at the UN but said nothing about Taiwan's own status. The effect, though, was to isolate Taiwan diplomatically. Countries that wanted ties with Beijing had to drop their recognition of Taipei.
As of 2026, only 12 countries still formally recognize the Republic of China on Taiwan, most of them small states in the Caribbean, Central America, and the Pacific. The Vatican is the only European entity among them. Every few years another one switches recognition to Beijing.
Why the One China policy still matters
The One China formula has kept the Taiwan Strait quiet for decades by letting both sides claim they have not given ground. Beijing can say the world agrees Taiwan is part of China. Washington can say it never accepted that claim. Taiwan can govern itself without triggering the war that a formal declaration of independence might cause. The formula works because it is vague on purpose.
The arrangement is fragile. It depends on no one forcing the phrase to mean only one thing. If Beijing insists that acknowledgment equals acceptance, or if Taiwan declares statehood, or if the United States drops its ambiguity and commits to Taiwan's defense, the formula breaks and both sides would have to decide what they actually mean. For now, the deliberate gap between what "one China" means in Beijing and what it means in Washington is still wide enough to keep the peace.