Orrick Herrington & Sutcliffe, Skadden Arps Slate Meagher & Flom and Magisters have lined up on a $23.8bn (£16.4bn) deal – the largest merger in Ukrainian history.

The deal, completed on 21 April, saw Russia’s Altimo and Norway’s Telenor combine their stakes in cellular operators Russian Vimpelcom and Ukrainian Kyivstar GSM to create Vimpelcom.