What common interest united Japan, Italy, and Germany in the Anti-Commintern Pact?

The common interest that united Japan, Italy, and Germany in the Anti-Comintern Pact was the resistance against communist ideologies. This agreement, signed in 1936, was primarily aimed at countering the influence of the Comintern, an international communist organization that advocated for the spread of communism globally.

The signatory countries viewed communism as a direct threat to their own political systems and national interests. Japan, Italy, and Germany were all largely authoritarian regimes during this period and shared a desire to suppress communism, which they perceived as a destabilizing force within their own societies and across the globe. By forming this pact, these nations sought to coordinate their strategies against the spread of communism, reflecting a significant ideological alignment that transcended their individual territorial ambitions or military objectives at that moment.