In March 2020, European Commission President von der Leyen unveiled a ‘climate law’ to commit the 27-nation EU to reducing its net greenhouse gas emissions to zero by 2050. Six months later, Chinese President Xi Jinping pledged that China would become carbon neutral by 2060. Both announcements were seen as key in the global fight against climate change.As two high-ambition regions sharing a determination to live up to the objectives of the Paris Agreement, the EU and China are natural coalition partners. The EU wants to work closely with China to deploy a 'climate diplomacy' to share efforts with the rest of the world, especially with the biggest emitters. Together, they could exert strong pressure on other emitters to increase their ambitions, notably in Asia, a continent accounting for more than half of global emissions, but also in the Americas. It could turn 2021 into a successful year for climate action, culminating in COP-26 in November in Glasgow.