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 relief workers in armed conflicts and is to be placed on humanitarian and medical vehicles and buildings. The original emblem that has a red cross on a white background is the exact reverse of the flag of neutral Switzerland. It was later supplemented by two others which are the Red Crescent, and the Red Crystal. The Red Crescent was adopted by the Ottoman Empire during the Russo-Turkish war and the Red Crystal by the governments in 2005, as an additional emblem devoid of any national, political or religious connotation. The official mission statement says that: "The International Committee of the