Photo taken on Dec. 3, 2021 shows a meeting of the Joint Commission on the Joint Comprehensive Plan of Action (JCPOA) in Vienna, Austria. The meeting was about talks on the nuclear issue of Iran. (Photos: Xinhua)

Photo taken on Dec. 3, 2021 shows a meeting of the Joint Commission on the Joint Comprehensive Plan of Action (JCPOA) in Vienna, Austria. The meeting was about talks on the nuclear issue of Iran.

Wang Qun, Chinese negotiator and Chinese permanent representative to the United Nations and other international organizations in Vienna, speaks to reporters after a meeting of the Joint Comprehensive Plan of Action (JCPOA) Joint Commission in Vienna, Austria, on Dec. 3, 2021.

Enrique Mora, deputy secretary-general of the European External Action Service, speaks to reporters after a meeting of the Joint Comprehensive Plan of Action (JCPOA) Joint Commission in Vienna, Austria, on Dec. 3, 2021.