The first official announcement of an Argentine claim of South Georgia was made in 1927 at the International Postal Bureau in Bern. The first definitive Argentine claim of sovereignty over the South Sandwich Islands was made in 1938, when the President of Argentina ratified the 1934 Cairo Postal Convention. Since then, Argentina has maintained her claims of South Georgia and the South Sandwich Islands but repeatedly (in 1947, 1951, 1953, 1954 and 1955) refused to have them resolved by the International Court of Justice or by an independent arbitral tribunal.