Following the dissolution of the USSR, concern remains regarding the continuation of the military operations stance of the Cold War period. In Russia there is the so-called "Doomsday Device", a computerized system that would automatically launch a full-scale nuclear strike against the USA and its NATO allies after the Soviet political and military leadership had been destroyed. In 1993 the system was still operational and still being upgraded by the Russian military command. In that year an exercise had been conducted rehearsing full-scale nuclear war against the USA. In 1993 the USA still possessed an equivalent system which would activate if communication between Trident submarines and the government was lost.