Nov 13 (Reuters) - U.S. President Joe Biden will meet Chinese leader Xi Jinping in person on Monday for the first time since taking office, with U.S. concerns over Taiwan, Russia's war in Ukraine and North Korea's nuclear ambitions on top of his agenda. Biden and Xi, who have held five phone or video calls since Biden became president in January 2021, last met in person during the Obama administration. Xi's government has also criticized the Biden administration's posture toward Taiwan as undermining China's sovereignty and territorial integrity. Biden will also discuss Moscow's invasion of Ukraine and plans to be "unapologetic" in his defence of Ukraine, U.S. officials said last week. Biden will also warn Xi that North Korea's continued pursuit of weapons development will lead to an enhanced U.S. military presence in the region, the White House said.

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