Moscow is to review its military doctrine, a move that is caused by expansion of NATO in Eastern Europe, problems of missile defense and the crisis situation in neighboring Ukraine, says an official from the Russia’s Security Council.

“I have no doubts that the issue of drawing of military infrastructure of NATO member-countries to the borders of our country, including via enlargement, will remain one of the external military threats for the Russian Federation,” Mikhail Popov, deputy secretary of the Security Council said in an interview to RIA Novosti.