US President *Joe Biden and Chinese counterpart Xi Jinping will attend the first day of an Asia-Pacific leaders' summit* ahead of a face-to-face meeting under a cloud of diplomatic uncertainty cast by Donald Trump's election victory. 🇺🇸 🇨🇳 *Biden and Xi are due to hold talks Saturday,* in what a US administration official said will *probably be the last meeting between the sitting leaders of the world's largest economies* before Trump is sworn in in January. With the *Republican president-elect having signaled a confrontational approach to Beijing* for his second term, the bilateral meeting will be a closely watched affair. *Xi and Biden arrived in Lima on Thursday along with other world leaders* for a two-day heads-of-state meeting of the Asia-Pacific Economic Cooperation (APEC) grouping.