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SIOP

[sahy-op] /ˈsaɪ ɒp/
noun
1.
(formerly) the secret and central U.S. contingency plan for waging a nuclear war with the Soviet Union.
Origin of SIOP
s(ingle) i(ntegrated) o(perations) p(lan)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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