Donald Tusk, the European Council president, has publicly warned Donald Trump that a decision to quit the Paris Climate accord risks a further rupture in global politics.

Taking to Mr Trump's own favourite platform, Twitter, the EU leader tweeted at Mr Trump: "please don't change the (political) climate for the worse."

The warning came after turbulent Nato and G7 summits last week failed to paper over the deepening rifts between Europe and the Trump White House.

The US president will deliver his verdict in the White House Rose Garden on Thursday, announcing whether to keep the United States in the Paris climate accords in which almost all the worlds nations signed up to voluntary emissions cuts.