"We truly don't know whether it will be days or weeks or months," a U.S. government official told Reuters on background. Since 2016, when Tsai Ing-wen was elected Taiwan's president, Panama, El Salvador and most recently, Nicaragua, have changed sides. China does not allow countries to hold diplomatic ties with both itself and Taiwan, regarding the island as its territory. "If Honduras' switch to Beijing is formalized, Taiwan will have just 13 diplomatic allies, including Belize and Guatemala. Reporting by Sarah Kinosian in Mexico City and Ben Blanchard in Taipei; Editing by Dave Graham and Lincoln Feast.

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