Africa’s resources should not be used as a tool for geopolitical rivalry, Chinese President Xi Jinping has warned, as the US challenges Chinese dominance of critical minerals on the continent. “Africa’s resources belong to Africa,” Xi told Botswanan President Duma Boko in Beijing on Tuesday, according to Chinese state news agency Xinhua. He said it was a “historical injustice” that an unfair international division of labour had left the continent at the bottom of industrial and value chains, and...