MOSCOW, Dec 24 (Reuters) - Rosneft said on Mondayit secured combined loans of $16.8 billion to finance theacquisition of 50 percent stake in Anglo-Russian oil producerTNK-BP from BP. It said the company obtained a 5-year loan of $4.1 billionand a 2-year loan of $12.7 billion from a group of internationalbanks as it seeks to acquire a full control over TNK-BP in the$55 billion cash-and-stock deal. It said the banks include Bank of America Merrill Lynch,Barclays Bank, BNP Paribas, BTMU, Citibank, Credit Agricole, INGBank, Intesa Sanpaolo Banking Group, J.P. Morgan, MizuhoCorporate Bank, Natixis, Nordea Bank, SMBC, Societe Generale andUnicredit Bank which are acting as mandated lead arrangers andlenders.