"We are protecting Russian people from terrorist threat because it is better to do this abroad than to fight terrorism within the country," Medvedev told Rossiya-24 TV channel in an interview.
Russia, "unfortunately, has a very difficult experience in countering terrorism," he added.
Commenting on possible ways to settle the conflict in Syria, Medveded underscored that negotiations between the Syrian government and the country's opposition are necessary.
"The main thing is that everything is resolved through negotiations, that we manage to seat at the same table the [Syrian] opposition and the authorities, and that they work out proposals for the future of Syria," Medvedev told Rossiya-24 TV channel.