USA ▁as ▁the ▁Commun ist ▁Political ▁Association ▁and ▁to ▁propose ▁the ▁continu ation ▁of ▁the ▁no - st rike ▁p ledge ▁after ▁the ▁end ▁of ▁World ▁War ▁II . ▁The ▁entire ▁leadership ▁of ▁the ▁Party ▁came ▁to ▁Brow der ' s ▁defense ▁then ; ▁the ▁Com intern ▁directed ▁F oster ▁to ▁withdraw ▁his ▁critic isms . ▁ ▁F oster ' s ▁letter ▁to ▁the ▁National ▁Committee ▁subsequently ▁formed ▁the ▁basis ▁for ▁the ▁Du clos ▁letter ▁published ▁as ▁the ▁Cold ▁War ▁began ▁in ▁ 1 9 4 5 ▁that ▁sign aled ▁the ▁Soviet ▁Union ' s ▁change ▁in ▁line . ▁The ▁Party ▁members ▁who ▁had ▁den ounced ▁F oster ▁and ▁question ed ▁his ▁grasp ▁of ▁Marx ism ▁and ▁his ▁mental ▁fac ult ies ▁a ▁year ▁earlier ▁now ▁condem ned ▁Brow der ▁as ▁a ▁class ▁tra itor . ▁The ▁C PA ▁re est ab lished ▁itself ▁as ▁the ▁Commun ist ▁Party ▁USA ▁and ▁exp elled ▁Brow der . ▁While ▁F oster ▁nomin ally ▁shared ▁power ▁with ▁Eug ene ▁Dennis ▁and ▁John ▁William son , ▁he ▁had ▁the ▁most ▁prest ige ▁of ▁the ▁three . ▁ ▁During ▁F oster ' s ▁leadership ▁the ▁Party ▁took ▁a ▁harder ▁line , ▁both ▁intern ation ally ▁and ▁internally , ▁shed ding ▁much ▁of ▁the ▁" American ist " ▁r het or ic ▁of ▁Brow der ' s ▁dozen ▁years ▁in ▁leadership . ▁F oster ▁published ▁a ▁' new ▁history ' ▁of ▁America , ▁which ▁was ▁highly ▁pra ised ▁in ▁Moscow ▁and ▁was ▁translated ▁into ▁many ▁languages . ▁Of ▁it