The Russian foreign minister said that the decisions of the Group of Seven summit in Hiroshima, Japan, are aimed at "double containment" of Russia and China. Sergei Lavrov said that "the European Union has lost its sovereignty and has become subservient to the United States" The leaders stressed that they would work to strengthen disarmament and non-proliferation efforts to reach their goals of a world free of nuclear weapons, a pledge that is especially symbolic with the summit being held in the world's first city to be attacked by an atomic bomb.