▁Premier ▁Alex ei ▁Kos yg in ▁at ▁the ▁G lass bor o ▁Sum mit ▁Conference ▁in ▁ 1 9 6 7 , ▁and ▁in ▁July ▁ 1 9 6 8 ▁the ▁United ▁States , ▁Britain , ▁and ▁the ▁Soviet ▁Union ▁signed ▁the ▁Non - Pro l ifer ation ▁Tre aty , ▁in ▁which ▁each ▁sign atory ▁agreed ▁not ▁to ▁help ▁other ▁countries ▁develop ▁or ▁ac quire ▁nuclear ▁weapons . ▁A ▁planned ▁nuclear ▁dis arm ament ▁sum mit ▁between ▁the ▁United ▁States ▁and ▁the ▁Soviet ▁Union ▁was ▁sc utt led ▁after ▁Soviet ▁forces ▁viol ently ▁suppress ed ▁the ▁Prag ue ▁Spring , ▁an ▁attempted ▁dem ocrat ization ▁of ▁Czech oslov ak ia . ▁ ▁Soci ologist ▁Ir ving ▁Louis ▁Hor ow itz ▁has ▁expl ored ▁the ▁du ality ▁of ▁roles ▁between ▁Johnson ▁as ▁the ▁master ▁domestic ▁tact ician ▁and ▁the ▁mis gu ided ▁military ▁tact ician . ▁Those ▁character ▁tra its ▁which ▁made ▁him ▁excel ▁at ▁the ▁one ▁made ▁him ▁fail ▁in ▁the ▁other . ▁Three ▁factors ▁are ▁involved : ▁Johnson ' s ▁ ▁id ios ync ras ies , ▁struct ural ▁issues ▁in ▁the ▁president ial ▁role , ▁and ▁the ▁contradict ions ▁inher ent ▁in ▁the ▁liberal ▁Democratic ▁coal ition . ▁ ▁Vietnam ▁ ▁Background ▁and ▁G ulf ▁of ▁Ton kin ▁Resol ution ▁ ▁After ▁World ▁War ▁II , ▁Vietnam ese ▁revolution aries ▁under ▁Commun ist ▁leader ▁Ho ▁Chi ▁Min h ▁sought ▁to ▁gain ▁independence ▁from ▁France . ▁The ▁ 1 9 5 4 ▁Gene va ▁Ag re ements ▁had ▁partition ed ▁French