Europe is experiencing huge heat waves despite leading on climate change action. Do we need enforceable "nuclear-style" global pollution treaties and how would we enforce them? Also how do you view China being the top carbon emitter but also the country that has built the most solar panels?

Europe is experiencing huge heat waves despite leading on climate change action. Do we need enforceable "nuclear-style" global pollution treaties and how would we enforce them? Also how do you view China being the top carbon emitter but also the country that has built the most solar panels?