29 April is the UN Day of Remembrance for all Victims of Chemical Warfare. The day was established in 2005. The date is significant as it commemorates the day in which the 1997 Chemical Weapons Convention entered into force. The aim behind the annual day is to pay tribute to the victims and to ‘reaffirm the commitment of the Organization for the Prohibition of Chemical Weapons (OPCW) to the elimination of the threat of chemical weapons, thereby promoting the goals of peace, security, and multilateralism.’ Read more.