The best paragraph I've read this month
"what if Poland had agreed in 1939 to join Germany in an invasion of the Soviet Union, as Hitler wanted? If Poland had allied with Germany rather than resisting, Britain and France would not have issued territorial guarantees to Poland, and would not have had their casus belli in September 1939. It is hard to imagine that Britain and France would have declared war on Germany and Poland in order to save the Soviet Union. If Poland’s armies had joined with Germany’s, the starting line for the invasion would have been farther east than it was in June 1941, and Japan might have joined in, which would have forced some of the Red Army divisions that defended Moscow to remain in the Far East. Moscow might have been attained. In this scenario, there is no Molotov-Ribbentrop pact, and thus no alienation of Japan from Germany. In that case, no Pearl Harbor, and no American involvement. What World War II becomes is a German-Polish-Japanese victory over the Soviet Union. That, by the way, was precisely the scenario that Stalin feared."
Thanks to Tyler, Andrew Roberts and Timothy Snyder for coaching me up. More here.