From 1911 to 1912, Italy and the Ottoman Empire fought a war over the Turkish provinces of Tripolitana and Cyrenaica, with the former emerging as the victor. During the conflict, Italian forces also occupied the Dodecanese islands in the Aegean Sea. Italy agreed to return the Dodecanese to the Ottoman Empire in the Treaty of Ouchy in 1912. However, the vagueness of the text, combined with subsequent adverse events unfavourable to the Ottoman Empire (the outbreak of the Balkan Wars and World War I), allowed a provisional Italian administration of the islands, and Turkey eventually renounced all claims on these islands in Article 15 of the 1923 Treaty of Lausanne.