US President Donald Trump's administration called Wednesday for a preferential trade zone among allies on critical minerals crucial for advanced technology, in a rare turn to multilateralism in the face of China's dominance.

Representatives of 55 countries gathered at the State Department to launch what Vice President JD Vance called the Agreement on Trade in Critical Minerals, a far cry from the Trump administration's disdain for alliances and traditional diplomacy since returning to office a year ago.

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