I’m not a big fan of China, but that’s just dishonest. Yes, China emits more than twice the co2 US emits. But that means that its per capita emissions are still way below those of the US, even after western countries outsourced a lot of their own pollution to China. Yes, you NEED to talk to China if you’re going to solve it, but pretending that it is more on them than on the west is ridiculous.

Agreed. I can’t see anyone else ever giving up nukes again, except for special situations like South Africa.

The US has absolutely not signed a defensive pact with Ukraine. Its commitment in the Budapest memorandum is limited to respecting Ukraine’s sovereignty and bringing matters to UN Security Council in case that sovereignty is violated, which does nothing as long as the violating party is a permanent member. The whole document was pretty a nice political declaration. Don’t get me wrong, I think the US should provide all help possible to Ukraine, but saying that it has a defensive pact or a treaty obligation to do so is unfair.