<ul><li>US President-elect Donald Trump has officially announced Sen. Marco Rubio as his pick for secretary of state.</li><li>Rubio is known for his tough stance on China, having been sanctioned twice by Beijing.</li><li>His nomination raises questions about US-China relations and US support for Taiwan.</li><li>Rubio has been critical of China's ambitions and has advocated for military support for Taiwan.</li></ul>

What Marco Rubio's nomination as Trump's secretary of state means for China and Taiwan

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