According to this treaty, it will limit Russia and US within 10 years to between 1700 and 2200 deployed strategic nuclear warheads down from about 6000 a piece now- a two third cut in their nuclear assets.
They agreed to exchange information on missile defence programme and tests and have reciprocal visits to observe missile defence test. Also to explore opportunities for intensified practical cooperation on missile defence. They also agreed to institutionalise the dialogue on strategic stability through the establishment of a consultative group for strategic security at the levels of foreign minister and defence minister.
The US agreed to limit its controversial star wars anti-missile defence projects to levels that would not threaten Russia’s nuclear deterrence.