In a surprise twist, Democratic Republic of Congo opposition leader Felix Tshisekedi was declared the winner of last month’s Presidential election, although his victory is being marred by claims by a rival that the poll was rigged. The African country is the world’s main supplier of battery ingredient cobalt and a key source of minerals from copper to tantalum. That means miners, analysts and users of the metals – which range from carmakers to mobile-phone companies – will be keeping a close watch on what happens next.
