Bharti Airtel signed a deal to acquire Zain Telecom's African business for $10.7 billion, making it the largest ever telecom acquisition by an Indian firm. The deal will make Bharti Airtel the world's seventh largest mobile operator with over 179 million subscribers across 17 African countries. Sunil Mittal, Bharti Airtel's Chairman, said the deal is a landmark for the global telecom industry and a game changer for Bharti Airtel by widening its operations beyond Asia and India.