Russia warns NATO To leave the Black sea In 21 days or be attacked. MOSCOW, September 2 (RIA Novosti) - Prime Minister Vladimir Putin said on Tuesday Russia will respond calmly to the presence of NATO warships in the Black Sea. (Russia's Black Sea Fleet - Image gallery) "Our response will be calm, not hysterical, but there will definitely be a response," Putin said. NATO sent a number of ships, including U.S. warships, into the Black Sea after Russia completed its operation "to force Georgia to peace" on August 12. The operation came as a response to Georgia's attack on South Ossetia on August 8. The U.S. has delivered millions of dollars of what it says is humanitarian aid to its ally Georgia. Russia has however questioned the nature of the deliveries. "If the talk is about humanitarian aid to one of the parties to the conflict, I believe that...it should go to the victims of aggression, that is to South Ossetia," Putin said,...