Why did the ussr refuse marshall aid for itself and its allies?

The USSR refused Marshall Aid for itself and its allies primarily due to ideological reasons, viewing the American initiative as a means to spread capitalism and exert influence over Europe. Additionally, Soviet leadership believed that accepting aid would compromise their control over Eastern European countries and undermine their socialist principles. The USSR also sought to promote its own economic model and strengthen its bloc without Western intervention. This decision ultimately solidified the division between Eastern and Western Europe during the Cold War.