Well, maybe, if global warming makes the Chinese more likely to attack Taiwan or Russia to seize Estonia.
From remarks by President Biden today to U.S. troops in the United Kingdom:
“You know, when I went over the tank in the Pentagon, when I first was elected vice president with President Obama. Military sat down to let us know what the greatest threats facing America were, the greatest physical threats. This is not a joke. You know what the Joint Chiefs told us, the greatest threat facing America was? Global warming. Because there’ll be significant population movements, fights over land, millions of people leaving places because they’re literally sinking below the sea in Indonesia because of the fight over what is arable land anymore.”
Even he gets that this is absurd – he has to emphasize it’s not a joke.