The progress was made possible thanks to the treaty on the limitation of nuclear weapons, also known as START-3. The treaty was signed by Dmitry Medvedev and Barack Obama on 8 April 2010 in Prague (came into force on 5 February 2011). In accordance with the document, nuclear warheads of the parties are to be reduced to 1,550 by 2021. The number of carriers (intercontinental ballistic missiles, submarine-launched ballistic missiles and heavy bombers) is supposed to be cut to 700 units.
It was the first strategic agreement, after the treacherous policy of democrats, in which Russia managed to win significant advantages. In the treaty, the Americans, for the first time in history, undertook to reduce their strategic nuclear potential, while Russia won an opportunity to increase it. Furthermore, the new treaty removed important limitations that existed in the previous START 1 and START 2 treaties. It goes about the size of areas for the deployment of mobile ICBMs, the number of multi charge ICBMs, and the possibility to build railway-based ICBMs. Russia did not make any concessions.
Having written off Moscow as a serious geopolitical rival, flying on the wings of inaccessible military and technological superiority, Washington drove itself into a trap, from which it does not see a way out even in a medium-term perspective.