2. Russia
Estimated Warheads: 8,420
Operational: 1,720
In Reserve: 2,700
Retired, awaiting dismantlement: 4,000
First Test: 1949
Most Recent Test: 1990
Of those, it is estimated that about 1,070 warheads are assigned to land-based missiles, 350 are assigned to nuclear submarines and 300 are ready to be deployed on aircraft, according to the report.