▁the ▁United ▁Nations ▁condem ning ▁the ▁quar antine ▁of ▁Cuba , ▁however ▁they ▁never ▁mentioned ▁the ▁presence ▁of ▁nuclear ▁miss iles ▁on ▁the ▁island , ▁nor ▁was ▁any ▁protest ▁sent ▁to ▁Nik ita ▁K hr ush chev . ▁After ▁a ▁series ▁of ▁Soviet ▁nuclear ▁tests ▁in ▁the ▁early ▁ 1 9 6 0 s , ▁the ▁president ▁of ▁the ▁Federation ▁wished ▁to ▁protest , ▁and ▁threatened ▁to ▁res ign ▁from ▁the ▁organisation , ▁but ▁was ▁over - ru led . ▁That ▁same ▁year ▁the ▁British ▁and ▁French ▁affili ates ▁also ▁threatened ▁to ▁leave ▁if ▁statements ▁kept ▁on ▁being ▁issued ▁without ▁their ▁appro val . ▁The ▁W FS W ▁ton ed ▁down ▁its ▁r het or ic ▁in ▁order ▁to ▁keep ▁its ▁two ▁most ▁important ▁Western ▁members . ▁ ▁During ▁the ▁Vietnam ▁War ▁the ▁Federation ▁condem ned ▁American ▁ag gression ▁and ▁accused ▁the ▁US ▁of ▁breaking ▁international ▁agre ements ▁and ▁using ▁bi ological ▁and ▁chemical ▁weapons . ▁The ▁ 1 9 6 6 ▁Executive ▁Council ▁meeting ▁in ▁East ▁Berlin ▁adopted ▁a ▁" S cient ists ▁Stat ement ▁on ▁Vietnam " ▁signed ▁by ▁ 1 3 ▁scient ists ▁– ▁including ▁ 9 ▁Nobel ▁Prize ▁w inners ▁– ▁calling ▁for ▁financial ▁aid ▁to ▁for ▁labor ator ies , ▁scientific ▁equipment ▁and ▁scientific ▁books ▁for ▁H ano i ▁University . ▁ ▁The ▁W FS W ▁was ▁also ▁affected ▁by ▁the ▁S ino - S ov iet ▁split . ▁In ▁ 1 9 6 3 ▁a ▁" P ek ing ▁center ▁of ▁the ▁World ▁Federation ▁of ▁Scient ific