Almost 200 nations accepted a compromise deal on Saturday aimed at keeping a key global warming target alive, but it contained a last-minute change that watered down crucial language about coal. Several countries, including small island states, said they were deeply disappointed by the change promoted by India to “phase down,” rather than “phase out” coal power, the single biggest source of greenhouse gas emissions.

“Our fragile planet is hanging by a thread,” United Nations Secretary-General Antonio Guterres said in a statement. “We are still knocking on the door of climate catastrophe.” Nation after nation had complained after two weeks of UN climate talks in Glasgow, Scotland, about how the deal did not go far or fast enough. But they said it was better than nothing and provided incremental progress, if not success.