Russian Prime Minister Dmitry Medvedev talks during an interview broadcast on state television in Moscow, Russia, December 9, 2015. REUTERS/Ekaterina Shtukina/Sputnik/Pool

MOSCOW (Reuters) - Russian Prime Minister Dmitry Medvedev on Monday ordered its government to prepare legal action against Ukraine if it does not repay $3 billion debt, Russian news agencies reported.

Medvedev said he had no doubts Kiev would not repay the money Ukraine owed to Moscow, RIA news agency reported.