High-alert nuclear weapon

High-alert nuclear weapon(s) commonly refers to a launch-ready ballistic missile(s) armed with a nuclear warhead(s) whose launch can be ordered (through the National Command Authority) and executed (via a nuclear command and control system) within 15 minutes or less. This can include any weapon system capable of delivering a nuclear warhead in this time frame.

Virtually all high-alert nuclear weapons are possessed by the U.S. and Russia. Both nations use automated command and control systems in conjunction with their early warning radar and/or satellites to facilitate the rapid launch of their land-based intercontinental ballistic missiles (ICBMs) and some submarine-launched ballistic missiles (SLBMs).[1] Fear of a "disarming" nuclear first-strike that would destroy their command and control systems and nuclear forces led both nations to develop "launch-on-warning" capability, which requires high-alert nuclear weapons able to launch on a 30-minute (or less) tactical warning, the nominal flight time of ICBMs traveling between the U.S. and Russia.

A definition of "high-alert" requires no specific explosive power of the weapon carried by the missile or weapon system, but in general, most high-alert missiles are armed with strategic nuclear weapons with yields equal to or greater than 100 kilotons.[2] The U.S.[3] and Russia[4] have for decades possessed ICBMs and SLBMs capable of being launched in only a few minutes.

The U.S. and Russia currently have a total of 900 missiles and 2581 strategic nuclear warheads on high-alert, launch-ready status. The total explosive power of these weapons is about 1185 Mt (megatons, or 1.185 billion tons of TNT equivalent explosive power).[5]

Notes and references
  1. Blair, Bruce. "The Logic of Accidental Nuclear War". © The Brookings Institution 1993.
  2. Starr, Steven. "An Explanation of Nuclear Weapons Terminology" Archived 2008-03-08 at the Wayback Machine. © Nuclear Age Peace Foundation 2008.
  3. Correll, J. How the Air Force Got the ICBM" Archived 2008-07-24 at the Wayback Machine. © Air Force Magazine Online (Journal of the Air Force Association) 2005, July, Vol. 88, No. 7.
  4. NTI online database. "Russia: History of Soviet/Russian ICBMs" Archived 2008-05-11 at the Wayback Machine.
  5. Starr, Steven. "High-alert nuclear weapons: examining the risks". SGR Newsletter, No. 26, Autumn 2008, in press.
gollark: ```luawhile run do local ev = {cy()} for ID, co in pairs(coroutines) do if coroutine.status(co.coroutine) == "dead" then co.status = "dead" co.running = false end if co.running then _G.process.running_ID = ID local ok, err = coroutine.resume(co.coroutine, table.unpack(ev)) if not ok then if co.error_handler then co.error_handler(err) else run = false error = err end end end endend```is what I have for that.
gollark: When I say "process" I mean "coroutine with fancy metadata being run in a loop".
gollark: Er, as a process, I mean.
gollark: It's not hard, just run `rednet.run` in your loop.
gollark: I guess it's not particularly related, but it's marginally nicer to not have two layers of shell floating around.
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