Union of South American Nations in Mitad del Mundo, Ecuador, where the cornerstone was laid for the headquarters of the General Secretariat of the Union. In April 2018, six countries suspended membership: Argentina, Brazil, Chile, Colombia, Paraguay and Peru. In August 2018, Colombia announced its withdrawal from the organization. At the Third South American Summit on 8 December 2004, presidents or representatives from 12 South American nations signed the "Cusco Declaration", a two-page statement of intent announcing the foundation of the South American Community. Panama and Mexico attended the signing ceremony as observers in Brazil. The mechanics of the new entity came out of the
League of Nations seized control of most of the region, as was later recognised by the 1938 truce. In October 1935, Italian dictator Benito Mussolini sent 400,000 troops to invade Abyssinia (Ethiopia). Marshal Pietro Badoglio led the campaign from November 1935, ordering bombing, the use of chemical weapons such as mustard gas, and the poisoning of water supplies, against targets which included undefended villages and medical facilities. The modern Italian Army defeated the poorly armed Abyssinians and captured Addis Ababa in May 1936, forcing Emperor of Ethiopia Haile Selassie to flee. The League of Nations condemned Italy's aggression and imposed economic sanctions in