Taiwanese and US officials have discussed how Taiwan can "meaningfully" participate at the United Nations just days before Chinese President Xi Jinping will give a speech to mark his country's half-century since accession to the global body.

Taiwan, using its formal name the Republic of China, held the Chinese seat at the United Nations until Oct 25, 1971, when it was voted out as representative of the country in favour of the People's Republic of China, which had won a civil war...