"At this stage, creating effective mechanisms that rule out the unauthorized acquisition of nuclear materials and technologies has special importance. This approach was endorsed at the recent Nuclear Security Summit and NPT Review Conference," Medvedev said in a letter to a plenary session of the Global Initiative to Combat Nuclear Terrorism.

"The key issues of nuclear nonproliferation and finding the best mechanisms for combating the threat of nuclear terrorism are on the agenda of your meeting. Only coordinated measures can solve these global problems," the letter said.

Medvedev said that the Initiative to Combat Nuclear Terrorism has grown stronger over the past year and is now "firmly on the path towards practical implementation."

"We expect that the number of participants who share common goals will continue to grow steadily. Russia is committed to ... continuing work on enhancing and strengthening the global nuclear nonproliferation regime," the president said.