Of all the motivations for war, nostalgia is at the top. Restoring lost glory. We see it not only in Putin's Russia, but in many former empires. Nostalgia is a factor in racist nationalist bloodletting everywhere. On this show, History Professor Lawrence Wittner talks about the power of nostalgia. The Trumpist right taps into it and we all know people who perceive a decline of America's past glory. But the climate crisis may help steer the world away from the longing to retrieve an imagined better past. Listen in.