Related Rule
Bulgaria
Practice Relating to Rule 73. Biological Weapons
At the First Review Conference of States Parties to the Biological Weapons Convention in 1980, the representative of Bulgaria stated:
10. His Government had already informed the Secretary-General of the United Nations that his country had never developed, produced, stockpiled or acquired by other means bacteriological (biological) weapons or toxins, and had stressed that it was strictly observing its commitments under the [1972 Biological Weapons Convention]. That policy … provided a safeguard against any violations.
11. In the light of the obligations undertaken by … Bulgaria in ratifying all the international legal instruments banning or limiting the weapons or means used in armed conflicts, article 415 of the Bulgarian [Penal Code as amended] established severe penalties for anyone who in violation of the existing international rules of conduct in armed conflicts used, or ordered the use of, prohibited methods of warfare. 
Bulgaria, Statement of 6 March 1980 at the First Review Conference of States Parties to the Biological Weapons Convention, Geneva, 3–21 March 1980, UN Doc. BWC/CONF.I/SR.5, 10 March 1980, §§ 10–11.