Update (11amET):

House Speaker Nancy Pelosi has landed in Taiwa

House Speaker Nancy Pelosi is making the highest-level trip in 25 years by a U.S. government official to Taiwan, a self-governing island that China’s Communist Party claims as a part of its territory.

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According to a senior Taiwanese government official and a US official, Speaker of the House Nancy Pelosi is expected to visit Taiwan during her trip to Asia. However, the Biden administration, and China, have warned her not to go.

Tensions between China and Taiwan have caused the White House concern over how Pelosi’s visit might invoke a reaction from China. Currently the delegation’s itinerary publicly includes stops in South Korea and Japan, but not Taiwan.

CNN reports that during a regular foreign ministry briefing Monday, China warned against the “egregious political impact” of Pelosi’s planned visit to the self-governing island that China claims as a part of its territory and reiterated that its military “won’t sit by idly” if Beijing feels its “sovereignty and territorial integrity” is being threatened.

“We would like to tell the US once again that China is standing by, and the Chinese People’s Liberation Army will never sit idly by. China will take resolute responses and strong countermeasures to defend its sovereignty and territorial integrity,” Foreign Ministry spokesman Zhao Lijian told reporters, when asked about the fallout from Pelosi leading a congressional delegation to Taipei.

US House Speaker Nancy Pelosi is expected to visit Taiwan during her Asia trip, despite warnings from Biden officials worried about China's responsehttps://t.co/joU9Qyu92v

— CNN (@CNN) August 1, 2022

“As for what measures, if she dares to go, then let’s wait and see,” Zhao added.

Secretary of State Antony Blinken reiterated the administration’s line that it is Pelosi’s decision whether she visits, adding, “we do not know what Speaker Pelosi intends to do.”

The Taiwanese official stated Pelosi is expected to be in Taiwan overnight, although it is unclear when she will land. The U.S. official says the Defense Department is securing a safety plan for the Speaker, as well as monitoring Chinese “movements” in the region.

“Congress is an independent, coequal branch of government,” Blinken said at the United Nations on Monday afternoon. “The decision is entirely the Speaker’s…And so if the speaker does decide to visit and China tries to create some kind of crisis or otherwise escalate tensions, that would be entirely on Beijing,” Blinken said. “We are looking for them, in the event she decides to visit, to act responsibly and not to engage in in any escalation going forward.”