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Viet Nam
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Section A. Attacks against objects
Viet Nam’s Penal Code (1990) punishes “anyone who, in time of peace or in time of war, … destroys vital resources”. 
Viet Nam, Penal Code, 1990, Article 278.
Viet Nam’s Penal Code (1999) provides for the punishment of those “who, in time of peace or time of war … destroy the source of [the population’s] livelihood”. 
Viet Nam, Penal Code, 1999, § 342.
Viet Nam’s Criminal Code (2015), which includes war crimes, states:
Article 422. Crimes against humanity
1. Any person who, whether in peacetime or wartime, commits genocide against [the] population of an area, destroys sources of living [or the] cultural or spiritual life of a nation or sovereign territory, upsets the foundation of a society in order to sabotage it, or commits other acts of genocide, or destroys … the environment shall face a penalty of 10–20 years’ imprisonment, life imprisonment, or death.
2. [If t]his offence is committed under pressure or order[s] given by superior officers, the offender shall face a penalty of 10–20 years’ imprisonment. 
Viet Nam, Criminal Code, 2015, Article 422.