The USA and the USSR that formed anti-fascist alliance during the Second World War parted from each other after the war. The USA floated a new alliance of capitalist countries while the USSR led socialist nations. These two blocs- capitalist bloc and socialist bloc that represented contradictory ideas- continued their political and diplomatic wars. This enmity based on ideological conflict and diplomatic confrontations was called :
ACold war
BWorld War II
CArms Race
DIron Curtain