Hollywood loves a sequel, but the Russia-Ukraine crisis has made the possibility real, and no one should want to see it.

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The “us versus them” rhetoric and global military maneuvering likely to play out in the years to come threaten to divert attention and resources from the biggest risks to humanity, including the existential threat posed by climate change. It also may divert attention from a country — ours — that is threatening to come apart at the seams. To choose this moment to launch a new Cold War should be considered folly of the first order, not to speak of an inability to learn from history.

Beware the redux: America’s violent Cold War history