It does not look like some leaders of major polluting states will turn up.
Modi from India is said to be coming but India has said it will remain addicted to Coal for decades to come.
https://www.france24.com/en/americas/20211021-climate-change-will-cause-global-tensions-say-us-intelligence-services
Good to know that the CIA can know threats that are not just North Korea/Syria/Libya/Tunisia/Iraq/Afghanistan/Taiwan.
Looks like Obomba will be accompanying Biden, probably as his “minder”