Related Rule
Viet Nam
Practice Relating to Rule 74. Chemical Weapons
Viet Nam’s Law on the Implementation of the Chemical Weapons Convention (2005) provides:
Article 3 – Prohibited acts
1. For chemical weapons
a. Developing, producing, otherwise acquiring, stockpiling and using chemical weapons;
b. Exporting, importing chemical weapons directly or indirectly with any organizations or individuals;
c. Participating in any military preparations to use chemical weapons;
d. Supporting, encouraging or inducing, in any way, any organizations or individuals to engage in any activity prohibited under the Convention. 
Viet Nam, Law on the Implementation of the Chemical Weapons Convention, 2005, § 3(1)(a)–(d).
In 1981, in a letter to the UN Secretary-General in reaction to US allegations that Viet Nam was “using Soviet-supplied toxic chemicals in Laos and Kampuchea”, Viet Nam stated:
The US is … supplying toxic chemicals to [others] to be used against the peoples of other countries as is the case in Afghanistan … [The charges made by the United States are] aimed at covering the crime of the United States of using toxic chemicals on a large scale and for more than ten years during [US activities] against Viet Nam … The Ministry of Foreign Affairs of the Socialist Republic of Viet Nam completely rejects the above [charges made by the United States]. 
Viet Nam, Ministry of Foreign Affairs, Statement of 17 September 1981 by a spokesperson, reprinted in Letter dated 22 September 1981 to the UN Secretary-General, UN Doc. A/36/549, 23 September 1981, pp. 1–2.
In 1987, during a debate in the First Committee of the UN General Assembly, Viet Nam stated that it was committed to a global ban on chemical weapons. 
Viet Nam, Statement before the First Committee of the UN General Assembly, UN Doc. A/C.1/ 42/PV.29, 2 November 1987, p. 18.
At the 1989 Session of the Conference on Disarmament, Viet Nam stated: “On the one hand, Viet Nam has been the victim of the use of chemical weapons on an enormous scale, while on the other it neither produces nor holds any chemical weapon.” 
Viet Nam, Statement before the Conference on Disarmament, UN Doc. CD/PV.498, 28 March 1989, p. 11.