The Pact of Steel, officially known as the Pact of Friendship and Alliance between Germany and Italy, was a military and political alliance formed in 1939 between Fascist Italy, led by Benito Mussolini, and Nazi Germany, led by Adolf Hitler. This agreement solidified the Axis Powers' cooperation in their expansionist goals and military strategies during World War II, reflecting the ideologies of both regimes and enhancing their collaboration against perceived threats from other nations.