After the outbreak of World War II, Prince Paul signed a treaty of alliance on 25 March 1941, bringing his country into the Axis camp. Disapproving of this decision, the Yugoslav army revolted two days later and proclaimed the majority of young Peter II to assume full power. Paul, Olga and their three children were then arrested and handed over to the British, who deported them to Greece (where they were welcomed by King George II) then to Egypt (under the pretext of intrigue). At the same time, the overthrow of the Yugoslav regency led Hitler to bomb Belgrade and invade the country in April 1941.