Bharti Airtel, on Tuesday, said it had entered into a definitive agreement with the Warid Group to acquire its Congo operations, Warid Congo SA, a move that will help the Indian telecom operator strengthen footprint in the African market. The acquisition will make Airtel the largest mobile operator in Congo Brazzaville with around 2.6 million customers. At present, Airtel is the second largest operator in the country with over 1.6 million customers, while Warid is the third largest with around one million customers.