G-20 Climate Talks Threatened by Clash Over Coal Ahead of COP26

ROME—Leaders from the Group of 20 major economies are split over phasing out coal and limiting global warming to 1.5 degrees Celsius, officials said, throwing into doubt whether ambitious climate change targets can be hit.

The gathering of world leaders in Rome this weekend is expected to set the tone for talks at the nearly two-week United Nations climate summit in Glasgow, slated to follow immediately afterward.