

By its terms, Italy would receive the fulfillment of its national dream: control over territory on its border with Austria-Hungary stretching from Trentino through the South Tyrol to Trieste. The decision to join the fray on the side of the Allies was based largely on the assurances Italy received in the Treaty of London, signed in April 1915. Over the course of the months that followed, Italy and its leaders weighed their options wooed by both sides, they carefully considered how to gain the greatest benefit from participation in the war.

When World War I broke out in the summer of 1914, Italy declared itself neutral in the conflict, despite its membership in the so-called Triple Alliance alongside Germany and Austria-Hungary since 1882. On May 23, 1915, Italy declares war on Austria-Hungary, entering World War I on the side of the Allies-Britain, France and Russia.
