When the UK took on the COP26 presidency, less than 30% of the global economy was covered by a net zero target; that figure is now 80%. Under the UK’s G7 presidency, for the first time every G7 country has committed to ambitious near-term emission targets aligned with net zero by 2050. However, to keep 1.5 °C within reach, every nation, particularly the biggest emitters, has to step forward in what needs to be the decade of ambition.