NEW DELHI -- South Africa's MTN Group Ltd. and India's Reliance Communications Ltd. agreed to extend their exclusive talks in a sign that the companies are still trying to create an emerging-markets telecommunications giant and overcome a legal threat from Reliance Industries Ltd.
Reliance Communications, which operates a large wireless network in India, and MTN, which operates in Africa and the Middle East, will continue exclusive discussions about a possible deal until July 21, ...

