Mukhtar Babayev, Azerbaijan ecology and natural resources minister, attends a plenary session at the COP28 U.N. Climate Summit on Dec. 11, in Dubai, United Arab Emirates. Babayev has been named to lead the United Nations' annual climate talks later this year, prompting concern from some climate activists over his former ties to the state oil company in a major oil-producing nation. Rafiq Maqbool/AP hide caption