US climate change envoy John Kerry and his Chinese counterpart Xie Zhenhua (Getty)
As the COP26 global meetings on climate change ended on Saturday, I spoke with BBC Radio Scotland about a US-China agreement on the emergency.
We discuss the extent of the agreement, which includes a joint working group over the next decade. We explain why it can co-exist with US-China confrontation on other military and economic issues, and we ask the key question: will the deal matter, given domestic issues in each country, or is it just for show?
The other panellist is Lauri Myllyvirta of the Centre for Research on Energy and Clean Air.
Will the US and China, who produce more than 40% of the world’s emissions, put pressure on each other to fulfil this agreement? And will they work together to provide finance to the developing world for clean energy projects?