Speaker Nancy Pelosi was anticipated to seem in Singapore on Monday as a part of a carefully watched tour of Asia that has stoked fears, together with on the highest ranges of the American authorities, of dangerously heightened tensions with China over the chance that she would make a cease in Taiwan.

Ms. Pelosi has not confirmed whether or not she is going to go to Taiwan, a self-governing democracy of 23 million people who China claims as its personal territory. However she had proposed a visit to the island this yr, which was postponed as a result of she contracted the coronavirus, and when requested not too long ago about her travels plans, she stated that it was “essential for us to indicate assist for Taiwan.”

On Sunday, Ms. Pelosi revealed some extra particulars about her itinerary, which she had beforehand declined to reveal, citing safety issues. Her workplace stated in a press release that her journey, on which she can be accompanied by a small congressional delegation, would come with visits to Singapore, Malaysia, South Korea and Japan, to “give attention to mutual safety, financial partnership and democratic governance within the Indo-Pacific area.” A posting on the web site of the American Chamber of Commerce in Singapore stated that Ms. Pelosi can be attending a cocktail reception hosted by the group on Monday afternoon.

The opportunity of a visit to Taiwan by Ms. Pelosi — who can be the highest-ranking American official to go there since 1997, when a earlier Home speaker, Newt Gingrich, visited — comes at a very delicate time in U.S.-China relations. The Biden administration has grown more and more frightened that China’s chief, Xi Jinping, may attempt to transfer, maybe with pressure, in opposition to Taiwan throughout the subsequent yr and a half.

Mr. Xi, China’s most authoritarian chief in many years, has pledged to pursue reunification with Taiwan, although he has not specified a timeline. Some analysts concern that he could really feel strain to indicate a tricky stance — presumably together with navy motion — in opposition to any perceived challenges to that pledge forward of an essential Chinese language Communist Social gathering Congress this fall, when he’s anticipated to assert a 3rd time period as chief.

Mr. Biden himself has seemingly alluded to the chance of a conflict with China if Ms. Pelosi visits. Requested not too long ago by reporters concerning the proposed journey, he stated that “the navy thinks it’s not a good suggestion proper now.” The president has additionally been shoring up U.S. relations with Asian allies as a possible counterweight to China’s rise.

China has not specified how it will react if Ms. Pelosi’s go to went forward. Throughout a two-hour telephone name between Mr. Xi and Mr. Biden on Thursday, their first direct dialog in 4 months, Mr. Xi warned Mr. Biden in opposition to “taking part in with hearth” on the Taiwan difficulty, in response to a Chinese language authorities assertion that didn’t explicitly point out the Home speaker.

Others have been extra direct in denouncing the potential go to. A spokesman for China’s Overseas Ministry, Zhao Lijian, informed reporters final week that China would take “agency and resolute measures” if Ms. Pelosi visited Taiwan and that america can be “chargeable for all the critical penalties.” Some political analysts and state media commentators have recommended that China would activate its air pressure to forestall the go to — elevating the specter of armed battle.

The Chinese language navy introduced it will conduct drills on Saturday with dwell ammunition within the waters off southeastern Fujian Province, about 80 miles from Taiwan. On Sunday, a spokesman for the Chinese language air pressure stated that the nation’s fighter jets flew round Taiwan to reinforce the flexibility to defend territorial integrity, with out specifying dates.

The Biden administration insists that its stance on Taiwan has not modified, a message that Mr. Biden relayed to Mr. Xi throughout their telephone name, in response to the White Home. Longstanding American coverage acknowledges, with out endorsing, China’s place that Taiwan is a part of its territory, and holds that america would shield the island with out saying precisely how.

However the president has little official authority over Ms. Pelosi and her journey plans. And rising anti-China sentiment in each the Democratic and Republican events makes it awkward politically for Mr. Biden to overtly discourage her journey.

Some Chinese language and American analysts have performed down the dangers of navy escalation, noting that Mr. Xi would most likely need to keep away from unpredictability forward of the Social gathering Congress this yr.

The Chinese language authorities maybe gave a foretaste of the way it will reply to Ms. Pelosi’s go to when the navy introduced live-fire workouts in waters 80 miles from neighboring Taiwan’s coast. A spokesman for China’s air pressure additionally declared that the pressure has the “agency will, full confidence and adequate functionality to defend nationwide sovereignty and territorial integrity.”

On the similar time, home politics, in each China and america, has left little room for sleek de-escalation, stated Chen Qi, a professor of worldwide relations at Tsinghua College in Beijing. It may value the Democrats politically if Ms. Pelosi decides to not go to Taiwan, Professor Chen stated in an interview with a journalist for Xinhua, China’s state information company. And China can’t afford to be seen as weak within the face of a perceived provocation.

“Now it’s as much as who blinks first,” Professor Chen stated.

John Liu and Claire Fu contributed analysis.