Heck, pretty much anything from November 1918 could be considered WW2... Pre WW2 during the Versailles treaty, 1918, through 1939. The stock market crash in 1929, global depression allowed the Lenin/Marxist movement in Russia, Spain had its civil war, Hitler comes to power, violates the treaty (oh gee, just like everyone violating the UN), and before you know it, the entire world blows up. Kind of like what is happening now. I'd say we are at the 1925-1929 period. Once the stock market blows up again, depression sets in, you'll see those wanting power to take over, you'll have another global war. This next global conflict, I doubt mankind will survive, in any strength. Heck, it might even make it more like the Star Trek TOS episode "The Omega Glory".