"I think -- presumptuous of me to say, to talk for another leader -- but the fact that China trying to assert, understandably, a new role in the world as a world leader, not showing up? Come on," Biden told reporters at a news conference.
"The same with Putin and Russia. You know, his tundra is burning. Literally, the tundra is burning. He has serious, serious climate problems. And he is mum," Biden added.