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A sign at the Womens March in Washington mimics a cover of German magazine Der Spiegel (Photo: Mark Dixon)

In his angriest, darkest speech since his inauguration day, Donald Trump has torn the US away from the global collaboration to fight runaway warming.

Much has been made of the vacuity of Trump’s address. Let’s be clear, this was political theatre designed solely for an audience too betrayed and cynical to care what’s true. Nothing about it was supposed to adhere to the reality of the Paris accord.

In that, Trump exposed the agreement for what it is – a Rorschach treaty, able to distort to any national political desire. Trump took that to its extreme, rewriting it on the White House lawns.

The deal was at once “non-binding” and punishingly unfair. It allowed developing countries off the hook, while targeting US wealth. It would be renegotiated, or not, whatever. It was not about climate change, he said, but about screwing the US.

The rest of the world celebrated the Paris accord (“they went wild, they were so happy”), said Trump, because it put the US at a disadvantage.

“At what point does America get demeaned?” asked the president.

Jumping back to the Rorschach analogy, what stared out of this inkblot was a paranoid, sociopathic worldview.

In the face of this, the Paris deal – with its fragile balance of idealism and self-interest – never stood a chance with Trump. It is tacked together with peer pressure and peer pressure doesn’t work on sociopaths.

The challenge now, is not only economic – as some would frame it. The future will be defined by competing ideas of what nations are for and how they collaborate. The Paris…