Nearly 200 countries will gather next week for the U.N. climate summit, COP29. Here are some of the major players and negotiating blocs involved in the COP29 summit starting Nov. 11 in Baku, Azerbaijan.

China's vice premier, Ding Xuexiang, will travel to Baku, the capital of Azerbaijan, to attend the COP29 climate summit next week, a foreign ministry spokesperson said on Friday.

The President-elect, who has called climate change a hoax, is hostile to global efforts to slow planetary warming, shifting the leadership burden to Europe and China.

European Commission President Ursula von der Leyen will not attend the COP29 climate summit because of political developments in Brussels, a Commission spokesperson told Reuters on Tuesday. There, EU lawmakers are vetting the members of her new European Commission,

China has requested that countries hold talks at next week's COP29 U.N. climate summit on carbon border taxes and other "restrictive trade measures" that Beijing says are hurting developing countries,