 Complete the following phrase:  In 1912 he became a tutor and fellow in ancient history at Balliol College, and in 1915 he began working for the intelligence department of the British Foreign Office. After serving as a delegate to the Paris Peace Conference in 1919 he served as professor of Byzantine and modern Greek studies at the University of London. It was here that Toynbee was appointed to the Koraes Chair of Modern Greek and Byzantine History, Language and Literature at Kings College, although he would ultimately resign following a controversial academic dispute with the professoriate of the College. From 1921 to 1922 he was the Manchester Guardian correspondent during the 