According to the most recent START Treaty exchange data, on July 1, 2006 Russia had 760 strategic delivery platforms that could carry up to 3360 nuclear warheads. The change from January 2006 was mostly due to decomissioning of Topol/SS-25 missiles – the Strategic Rocket Forces continued to decommission missiles of the division in Yur’ya and began withdrawal of missiles from the divisions in Kansk and Irkutsk. The number of operational systems in the strategic fleet and the strategic aviation had not changed.