"It was in fact more plausible for the Turks to portray the Greeks as a fifth column, since the Greek Prime Minister Eleftherios Venizelos strongly favoured Greek intervention on the side of the Entente powers and, although King Constantine resisted until finally driven to abdicate in June 1917, the presence of an Anglo-French force at Salonika from October 1915 cast doubt on the credibility of Greek neutrality. Viewed from Salonika, the First World War was the Third Balkan War, with Bulgaria joining Germany and Austria in the rout of Serbia; indeed, it was to shore up the disintegrating Serbian position that the Entente powers had sent their troops to Salonika. It was too late. The Anglo-French force remained penned in, unable, despite Greece's belated entry into the war, to prevent the German-Bulgarian defeat of Romania in 1917. Yet the final phase of the war saw a collapse as complete as that suffered by the Germans on the Western Front. An offensive on the Salonika Front forced Bulgaria to sue for peace on September 25,1918; six days later the British marched into Damascus, having defeated the Turkish army in Syria. On October 30 the Turks surrendered."