▁r amp ant ▁on ▁a ▁Boston ▁Social ▁Register ". ) ▁ ▁After ▁a ▁post - war ▁st int ▁at ▁the ▁National ▁War ▁College , ▁he ▁returned ▁to ▁Y ale ▁for ▁three ▁years , ▁during ▁which ▁time ▁he ▁p enn ed ▁his ▁classic ▁work , ▁Str ateg ic ▁Int elligence ▁for ▁American ▁World ▁Policy . ▁In ▁November ▁ 1 9 5 0 , ▁during ▁the ▁crisis ▁that ▁followed , ▁the ▁Chinese ▁Commun ist ▁inc urs ion ▁in ▁the ▁Korean ▁War , ▁which ▁prompt ed ▁a ▁build - up ▁and ▁re organ ization ▁of ▁the ▁American ▁Int elligence ▁Community , ▁he ▁was ▁called ▁to ▁Washington , ▁DC , ▁to ▁assist ▁Harvard ▁historian ▁William ▁L . ▁L anger , ▁with ▁whom ▁he ▁had ▁worked ▁in ▁O SS , ▁to ▁form ▁a ▁new ▁C IA ▁Office ▁of ▁National ▁Est im ates ▁( ONE ). ▁He ▁succeeded ▁L anger ▁as ▁chief ▁of ▁ON E ▁in ▁ 1 9 5 2 , ▁serving ▁in ▁that ▁position ▁for ▁the ▁next ▁fifteen ▁years ▁under ▁four ▁Direct ors ▁of ▁Central ▁Int elligence ▁in ▁four ▁president ial ▁administr ations . ▁ ▁ON E ▁was ▁" a ▁small ▁organization , ▁consisting ▁of ▁a ▁Board ▁of ▁National ▁Est im ates ▁of ▁between ▁five ▁and ▁twelve ▁senior ▁exper ts , ▁a ▁professional ▁staff ▁of ▁ 2 5 – 3 0 ▁regional ▁and ▁functional ▁special ists , ▁and ▁a ▁support ▁staff ." ▁Until ▁it ▁was ▁dissol ved , ▁six ▁years ▁after ▁Kent ' s ▁ret irement , ▁in ▁a ▁Water gate - era ▁C IA ▁re organ