Aaron Zack teaches politics at Baruch College and is the author of: Hegemonic War and Grand Strategy: Ludwig Dehio, World History and the American Future (Lanham: Lexington Books, 2016) and "'Hegemonic' Decline, Emerging Great Powers, and Global Order: Some Considerations on the Rise of Germany and the Rise of China' in Benjamin Rowland (ed.), Is the West in Decline? (Lanham: Lexington Books, 2015).