sentences:  In Jun 2010, Bharti struck a deal to buy Zain's mobile operations in 15 African countries, in India's second biggest overseas acquisition after Tata Steel's $13 billion buy of Corus in 2007.Bharti Airtel completed its $10.7 billion acquisition of African operations from Kuwaiti firm on 8 June 2010, making Airtel the world's fifth largest wireless carrier by subscriber base.Airtel has reported that its revenues for the fourth quarter of 2010 grew by 53% to US$3.2 billion compared to the previous year, newly acquired Zain Africa division contributed US$911 million to the total.