International Committee of the Red Cross additional protocol to the Geneva Convention was adopted in 1925 which outlawed the use of suffocating or poisonous gases and biological agents as weapons. Four years later, the original Convention was revised and the second Geneva Convention "relative to the Treatment of Prisoners of War" was established. The events of World War I and the respective activities of the ICRC significantly increased the reputation and authority of the Committee among the international community and led to an extension of its competencies. As early as in 1934, a draft proposal for an additional convention for the protection of the civil population
International Committee of the Red Cross during an armed conflict was adopted by the International Red Cross Conference. Unfortunately, most governments had little interest in implementing this convention, and it was thus prevented from entering into force before the beginning of World War II. In the Interwar period, Bolivia and Paraguay were disputing possession of the Gran Chaco - a desert region between the two countries. The dispute escalated into a full-scale conflict in 1932. During the war the ICRC visited 18,000 Bolivian prisoners of war and 2,500 Paraguayan detainees. With the help of the ICRC both countries made improvements to the conditions of the detainees.