Their two-year term officially started on January 1, but Friday, January 2 is the first working day of the council for 2026 after the Christmas and New Year break.
A flag installation ceremony was held to mark the start of their responsibilities.
The 15-member Security Council has five permanent members, including Britain, China, France, Russia and the United States, and 10 non-permanent members elected for two-year terms by the UN General Assembly. Five non-permanent members are replaced every year.