Since the fall of the Berlin Wall, NATO has strived to reduce mutual suspicions with Russia and to build a more co-operative relationship. So it is vexing that 20 years on, Russia continues to view NATO as a hostile alliance. Moscow competes with NATO for influence in Eastern Europe, it seeks to halt NATO’s eastward enlargement and its recent security proposals for a new European security architecture were aimed in part at weakening NATO's role in European security. Moscow’s policy worries the Central European members of NATO, who have been demanding that the alliance draft defensive plans for the unlikely, but not unthinkable, possibility of a conflict with Russia.