On 4 August 1914, Great Britain, together with her Dominions and Colonies, declared war on the German Empire. (BNCI)
Before Mussolini was able to take his chance, Italy was drawn into World War I. At first she remained neutral, but in 1915 threw in her lot with the allies and declared war on Austria. (BNCI)
On 4 August, Great Britain, with the overwhelming support of her people, declared war on Germany for violating Belgian sovereignty. (BNCI)