The official who led the international effort to rid Syria of its chemical weapons has been named the new United Nations special coordinator for Lebanon.

U.N. Secretary-General Ban Ki-moon announced Sigrid Kaag's appointment in a statement Monday.

Kaag, of the Netherlands, served as special coordinator of joint mission of the United Nations and the Organization for the Prohibition of Chemical Weapons to eliminate Syria's chemical weapons. The mission ended in September after destroying nearly all of Syria's declared stockpile. However, concerns remain that Syria has not made a full declaration of its chemical weapons and the OPCW continues to work on resolving those discrepancies.

Kaag has served in various U.N. positions since 1994. She replaces Derek Plumbly of Britain in the Lebanon post.