Le roi Willem Alexander des Pays-Bas et la princesse Victoria de Suède assistent au 20ème anniversaire de l'organisation pour la prohibition des armes chimiques à La Haye le 26 avril 2017. King Willem-Alexander and Crown Princess Victoria of Sweden are celebrating the 20th anniversary of the entry into force of the Chemical Weapons Convention (CWC) and the establishment of the Organization for the Prohibition of Chemical Weapons (OPCW). The ceremony took place in the Ridderzaal in The Hague.26/04/2017 - La Haye - Photo