Ukraine says it has recaptured the airport in the eastern city of Donetsk after a day of air strikes and fierce gun battles with pro-Moscow separatists that left at least 48 people, including two civilians, dead. ‘The airport is under our full control. The enemy suffered heavy losses. We have none,’ Interior Minister Arsen Avakov said in a statement on Tuesday. The Organisation for Security and Cooperation in Europe (OSCE) also reported that it had lost contact with a four-member observer team based in the restive city since Monday evening. The battle for the main transport hub in Ukraine's industrial heartland erupted on Monday just hours after president-elect Petro Poroshenko vowed to take a tough stand against the ‘terrorists’. Russian President Vladimir Putin immediately called on Ukraine to end its ‘punitive’ operation in the rebel-held east and for talks between Kiev and the pro-Russian separatists.