In 1941, during World War II, Ethiopia was liberated by Allied forces, mainly from the British Empire, in the East African Campaign, but an Italian guerrilla war continued until 1943. Despite the return of Emperor Haile Selassie from his exile and the recognition of Ethiopian sovereignty with the signing of an Anglo-Ethiopian Agreement in December 1944, some regions still remained under British occupation for several more years. Under the peace treaty of 1947, Italy recognized the sovereignty and independence of Ethiopia and renounced all claims to special interests or influence in that country. Many Italian settlers remained for decades after receiving full pardon by Emperor Selassie.