US officials had also sought to reassure China — which views Taiwan as its territory and had demanded Pelosi stay away — that such a visit was not the first of its kind, nor would it represent any change in US policy.

Not surprisingly, Beijing was not convinced, which is partly a mess of President Joe Biden’s own making.

After all, the White House has been sending conflicting signals on Taiwan for some time.

Biden, for example, has repeatedly said that America has a “commitment” to defend Taiwan, sometimes referencing the Taiwan Relations Act, which sets the framework for the economic and diplomatic relationship between the US and the island nation.

No explicit commitment exists.

In November, after a virtual summit with Chinese President Xi Jinping, Biden also remarked that Taiwan was “independent”. This was yet another presidential gaffe.

And as recently as May, during a visit to Japan with Prime Minister Fumio Kishida, Biden declared that the US would intervene militarily if China attacked Taiwan, only to have the White House once again walk back his remarks.

China-relations expert Bonnie Glaser, the director of the Asia Program at the German Marshall Fund, a Washington-based think tank, says America’s long-standing tactic of “strategic ambiguity” has given way to strategic confusion, which is partly the reason why China is now testing the US.

But she adds that while the messaging needs to be clearer, the relationship between the two countries had reached such an “unprecedented level of acrimony” that even greater consistency might not have been enough to convince China that Pelosi’s visit wasn’t a big deal.

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“From my perspective, the reason this is so sensitive to China is the run-up to the 20th National Party Congress, where Xi Jinping is supposed to get his third five-year term in power,” Glaser says.

“He cannot be seen as soft on the United States. He has to demonstrate his determination to defend China’s sovereignty and territorial integrity.”

To that end, the next 24 hours will be critical. With Pelosi preparing to meet Taiwan’s first female president Tsai Ing-wen on Wednesday morning, the stand-off over her visit has exacerbated tensions on both sides of the Pacific at a time when the US is already consumed with two other anti-American aggressors: Russia, which continues to wage war against Ukraine, and Iran, which has so far refused to re-enter the nuclear pact that Donald Trump cancelled and could soon take steps to build a nuclear weapon.

Meanwhile, China, in response to Pelosi’s trip, has now announced six exclusion zones encircling Taiwan to facilitate live-fire military drills from Thursday to Sunday, with some of the areas crossing into the island’s territorial waters.

Separately, the People’s Liberation Army said exercises could begin as soon as Tuesday, leaving open the possibility of military activities around Taiwan while Pelosi was visiting.

And Beijing has also accused the US of violating the “One China” policy, in which the United States recognises the People’s Republic of China as the sole legal government of China but only “acknowledges” the Chinese position that Taiwan is part of China.

Just don’t expect the US House Speaker to waver.

“Our discussions with Taiwan leadership reaffirm our support for our partner and promote our shared interested, including advancing a free and open Indo-Pacific,” she said in a statement issued shortly after she landed in Taipei.

“America’s solidarity with the 23 million people of Taiwan is more important today than ever, as the world faces a choice between autocracy and democracy.”

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