 Following Katsura's death, he allied with Yamagata Aritomo and became Home Minister in 1916, and Foreign Minister in the Terauchi administration in 1918.A strong believer in Pan-Asianism, Gotō pushed for an aggressive and expansionist Japanese foreign policy during World War I, and strongly endorsed the Japanese intervention in Siberia.Gotō served as Mayor of Tokyo City in 1920, and again as Home Minister in 1923, contributing to the reconstruction of Tokyo following the 1923 Great Kantō earthquake.