US rejoins Paris climate accord with warning: this year’s talks are ‘last, best hope’

John Kerry made remark as US officially returned to climate agreement on Friday, 107 days after it left under Donald Trump

The US has marked its return to the Paris agreement by urging countries to do more to confront the climate crisis, with America’s climate envoy, John Kerry, warning that international talks this year are the “last, best hope” of avoiding catastrophic global heating.

On Friday, the US officially returned to the Paris climate accord, 107 days after it left at the behest of former president Donald Trump. Joe Biden moved to reverse this on his first day in office and Kerry conceded that the US is returning “with a lot of humility, for the agony of the last four years”.