World Bulletin / News Desk

G7 leaders meet Friday determined to put on a display of united resolve in the fight against jihadist terrorism, despite deep divisions on trade and global warming.

British Prime Minister Theresa May will lead a discussion on terrorism in one of Friday's working sessions and is expected to issue a call for G7 countries to put more pressure on internet companies to remove extremist content.

"The fight is moving from the battlefield to the internet," a senior British official said ahead of the talks.

With May and Donald Trump among four new faces in the club of the world's major democracies, the gathering in Italy is being billed as a key test of how serious the new US administration is about implementing its radical policy agenda, particularly on climate change.

Senior officials are preparing to work through the night of Friday-Saturday in a bid to bridge what appear to be irreconcilable differences over Trump's declared intention of ditching the US commitment to the landmark Paris according on curbing carbon emissions.