Kammala wannan jumla: Bayan zaben 1913, Cook ya ba Deakin matsayin shugaban Hukumar Interstate, amma ya ƙi. A shekara ta 1914, bayan barkewar Yaƙin Duniya na I, ya yarda da bukatar da aka yi masa na shugabancin kwamitin sarauta don samar da abinci a lokacin yaƙin. Deakin ta karshe jama'a alkawari ya matsayin shugaban Australia tawagar zuwa 1915
Panama <unk> Pacific International Exposition a San Francisco. Cook ne ya fara ba shi wannan rawar sannan kuma Andrew Fisher, wanda ya dawo a matsayin firaminista a watan Satumbar 1914. An nada shi ne gaba daya na bikin kuma yana da goyon bayan Fisher da mataimakinsa Billy Hughes. Koyaya, sa hannun Deakin ya kasance batun tsoma baki na siyasa daga ministan harkokin waje Hugh Mahon, kuma ya yanke shawarar komawa Australia da wuri.