U.S. president Obama reinforces German chancellor Merkel's call for "a persistent presence in the Baltics," with a visit to Tallinin, Estonia, in September 2014. Obama told people in Latvia, Lithuania, and Estonia that he would work with the U.S. Congress to place more U.S. equipment in the Baltics and increase U.S. troop presence there. He stated the Baltics are "not post-Soviet" territory. Obama said at a concert hall in Tallinin about Russian support to separatists in eastern Ukraine- "It challenges the most basic principles of our international system- that borders cannot be redrawn at the barrel of a gun, that nations have the right to determine their own future. It undermines an international order where the rights of peoples and nations are upheld and cannot simply be taken away by brute force."