When it comes to alternative history, the Second World War is king. Dozens of books and wargames suggest how history would have changed if Hitler had invaded Britain or not invaded Russia. Want to know what happens when a Nimitz-class supercarrier goes back in time to battle the Japanese fleet at Pearl Harbor? There's a movie for that. What would the world be like if Nazi Germany had won? Plenty of novels paint a dark portrait. Would the Third Reich have triumphed if it had developed jet fighters sooner? Such topics are like incendiary bombs on Internet chat forums. Yet fascinating as these questions are, why are they any more fascinating than asking what would have happened if Imperial Germany had not invaded Belgium in 1914, if the Kaiser had built more U-boats, or if America had not entered the war? If it is plausible to imagine a historical timeline where Hitler won, then why not one in which the tsars still rule Russia, the British Empire was never exhausted by war, and the Ottoman Empire still controls the Middle East?