The US withdrawal from the Paris Agreement is bad enough. But what makes the announcement by Mr. Trump extraordinary, is the content and tone used against foreign leaders, not least close allies, being accused of using climate protection only as a pretext for stealing money and jobs from the United States . A such level of disrespect is really remarkable.
It brings reminiscences of the Roman treatment of foreign countries in the time ending with the Roman swallowing of more and more states.
That Trump for the time being is under pressure, also from his own party, gives little comfort. The Republican party is full of the same resentments against the world and even the EU allies. The president has now given precedence for such outbursts. It is as if the rest of the world is seen as irritating appendices. This may seem unwarranted taken into consideration the size of other powers . But with the total dominance of the United States in IT and its rising military force, a political leadership in Washington full of despise against the world can still be unpleasant.
Therefore the announcement by Mr. Trump is historical.