Nuclear triad

A nuclear triad refers to the nuclear weapons delivery of a strategic nuclear arsenal which consists of three components: land-based intercontinental ballistic missiles (ICBMs), strategic bombers, and submarine-launched ballistic missiles (SLBMs). The purpose of having a three-branched nuclear capability is to significantly reduce the possibility that an enemy could destroy all of a nation's nuclear forces in a first-strike attack; this, in turn, ensures a credible threat of a second strike, and thus increases a nation's nuclear deterrence.

While traditional nuclear strategy holds that a nuclear triad provides the best level of deterrence from attack, in reality, most nuclear powers do not have the military budget to sustain a full triad. Only the United States and Russia have maintained nuclear triads for most of the nuclear age. Both the US and the Soviet Union composed their triads along the same lines, including the following components:

The triad also gives the commander in chief the flexibility to use different types of weapons for the appropriate strike while also preserving a reserve of nuclear armaments theoretically safe from a counter-force strike:

Tactical nuclear weapons are used in air, land and sea warfare. Air-to-air missiles and rockets, surface-to-air missiles, and small air-to-ground rockets, bombs, and precision munitions have been developed and deployed with nuclear warheads. Ground forces have included tactical nuclear artillery shells, surface-to-surface rockets, land mines, medium and small man-packable nuclear engineering demolition charges, even man-carried or vehicle-mounted recoilless rifles. Naval forces have carried nuclear-armed naval rocket-assisted and standard depth charges and torpedoes, and naval gunnery shells. Tactical nuclear weapons and the doctrine for their use is primarily for use in a non-strategic warfighting role destroying military forces in the battle area; they are not counted toward triad status despite the possibility of many of these systems being usable as strategic weapons depending on the target.

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