Bolivia, Ethiopia, the Netherlands, Kazakhstan and Sweden finished their terms as 2018 closed. The 15-member council is the U.N.'s most powerful body. China, France, Russia, the United Kingdom and the United States are permanent members, with veto power.
Other members are elected by the 193-member General Assembly for staggered, two-year terms that are allocated by global regions. Seats are sought-after, and countries often campaign for years. The presidency rotates each month.