The review conference, which is held by the Organisation for the Prohibition of Chemical Weapons (OPCW) every five years, will last until May 19.
The aim of the conference is to assess the implementation process of the Chemical Weapons Convention and set priorities for the OPCW for the next session.
OPCW Director-General Fernando Arias will deliver a speech on the first day of the conference. Over the five days, the OPCW will present results of its work, while member states will engage in debates on the prohibition of chemical weapons, leading to the adoption of final documents of the conference on its last day.