International Committee of the Red Cross many countries, based on national law in these countries, based on agreements between the ICRC and the respective governments, or, in some cases, based on international jurisprudence (such as the right of ICRC delegates not to bear witness in front of international tribunals). The ICRC's operations are generally based on international humanitarian law, primarily comprising the four Geneva Conventions of 1949, their two Additional Protocols of 1977 and Additional Protocol III of 2005, the Statutes of the International Red Cross and Red Crescent Movement, and the resolutions of the International Conferences of the Red Cross and Red Crescent. International humanitarian
International Committee of the Red Cross national relief societies throughout the world. The movement had extended itself beyond Europe and North America to Central and South America (Argentina, Brazil, Chile, Cuba, Mexico, Peru, El Salvador, Uruguay, Venezuela), Asia (the Republic of China, Japan, Korea, Siam), and Africa (South Africa). With the outbreak of World War I, the ICRC found itself confronted with enormous challenges which it could only handle by working closely with the national Red Cross societies. Red Cross nurses from around the world, including the United States and Japan, came to support the medical services of the armed forces of the European countries involved