Pasha, ruler of the city, told the Bulgarian officials that "I have only one Thessaloniki, which I have surrendered". After the Second Balkan War, Thessaloniki and the rest of the Greek portion of Macedonia were officially annexed to Greece by the Treaty of Bucharest in 1913. On 18 March 1913 George I of Greece was assassinated in the city by Alexandros Schinas. In 1915, during World War I, a large Allied expeditionary force established a base at Thessaloniki for operations against pro-German Bulgaria. This culminated in the establishment of the Macedonian Front, also known as the Salonika front. And a temporary hospital run by the Scottish Women's Hospitals for Foreign Service was set up in a disused factory. In 1916, pro-Venizelist Greek army officers and civilians, with the support of the Allies, launched an uprising, creating a pro-Allied temporary government by the name of the "Provisional Government of National Defence" that controlled the "New Lands" (lands that were gained by Greece in the Balkan Wars, most of Northern Greece including Greek Macedonia, the North Aegean as well as the island of Crete); the official government of the King in Athens, the "State of Athens", controlled "Old Greece" which were traditionally monarchist. The State of Thessaloniki was disestablished with the unification of the two opposing Greek governments under Venizelos, following the abdication of King Constantine in 1917. On 30 December 1915 an Austrian air raid on Thessaloniki alarmed many town civilians and killed at least one person, and in response the Allied troops based there arrested the German, Austrian, Bulgarian and Turkish vice-consuls and their families and dependents and put them on a battleship, and billeted troops in their consulate buildings in Thessaloniki. Most of the old centre of the city was destroyed by the Great Thessaloniki Fire of 1917, which was started accidentally by an unattended kitchen fire on 18 August 1917. The fire swept through the centre of the city, leaving 72,000 people homeless; according to the Pallis Report, most of them were Jewish (50,000). Many businesses were destroyed, as a result, 70% of the population were unemployed. Two churches and many synagogues and mosques were lost. More than one quarter of the total population of approximately 271,157 became homeless. Following the fire the government prohibited quick rebuilding, so it could implement the new redesign of the city according to the European-style urban plan prepared by a group of