The Financial Times, November 16, 2021
"Joe Biden and Xi Jinping held extensive talks about Taiwan in a virtual meeting on Monday but failed to establish any “guardrails” to ensure that tensions over the island do not escalate into a dangerous conflict."
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“On Taiwan, there was sort of nothing new established in the form of guardrails or any other understandings,” a senior US official said. “The president was very clear in reaffirming very longstanding US policy and raising very clear concerns, but the idea of establishing specific guardrails with respect to Taiwan was not part of the conversation.”