Donald Trump has announced that he is pulling the US out of the Paris climate deal.

This is not a surprise. He promised to do so during the election, and the political cost of keeping this promise is pretty small.

Of note is that he took the least aggressive option to do so:

But he will stick to the withdrawal process laid out in the Paris agreement, which President Barack Obama joined and most of the world has already ratified. That could take nearly four years to complete, meaning a final decision would be up to the American voters in the next presidential election.

This is not a surprise.  Unlike EPA chief Scott Pruitt, who has sold his soul to climate deniers, Trump views this in an almost exclusively political context.

Taking 4 years to get out of the deal was quite literally the least that he could do without pissing off his supporters.