Cop26 summit at serious risk of failure, says Boris Johnson

UK PM says climate crisis talks at G20 over weekend only inched forward'

The Cop26 climate summit is at serious risk of failure because countries are still not promising enough to restrict global temperature rises to below 1.5C, Boris Johnson has warned.

In a blunt admission after two days of preliminary talks at the G20 meeting of world leaders, the prime minister conceded little progress had been made - and the conference is not on track to achieve a deal that keeps the goal alive. He put the chances of success as six out of 10".