Practice Relating to Rule 73. Biological Weapons
In 2015, in a statement during the meeting of States Parties to the Biological Weapons Convention, made on behalf of the Member States of the Non-Aligned Movement that are States Parties to the Biological Weapons Convention, including Viet Nam, and other States Parties to the Biological Weapons Convention, the permanent representative of the Islamic Republic of Iran stated:
The Group would like to re-emphasize its position as reflected in the Tehran final document of the NAM [Non-Aligned Movement] Summit, as reiterated by the NAM XVII Ministerial Conference held on 26–29 May 2014, Algers, Algeria in which:
“The Ministers of NAM States Parties to the  Biological and Toxin Weapons Convention (BTWC) reaffirmed that the possibility of any use of bacteriological (biological) agents and toxins as weapons should be completely excluded, and the conviction that such use would be repugnant to the conscience of humankind. …
We recognize the importance of the BWC [Biological Weapons Convention] and its role in the total ban on all biological and toxin weapons.