When asked at a joint press conference with Japanese Prime Minister Fumio Kishida whether the U.S. would be prepared to defend Taiwan if attacked, Biden replied: “Yes.”
“That’s the commitment we made,” Biden said. “We agree with the ‘one China’ policy. We signed on to it. All the attendant agreements [were] made from there. But the idea that that can be taken by force, just taken by force. It’s just not it’s just not appropriate.”
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A fuller account here adds this from the president:
“We support the ‘one China policy,’ we support all that we’ve done in the past. But that does not mean, that does not mean that China has the ability, has the – excuse me, the jurisdiction – to go in and use force to take over Taiwan.”