By a letter dated 16 December 1992, the Permanent Mission of the Czech and Slovak Federal Republic (CSFR) to the United Nations in Geneva informed CERN that the Czech and Slovak Federal Republic would cease to exist on 31 December 1992 and that two new states – the Czech Republic and the Slovak Republic – would succeed it as from 1 January 1993.

The letter states:

It is the understanding, readiness and agreement of the both (sic) Czech and Slovak Republics that they will smoothly assume the total obligations of the CSFR with CERN after December 31, 1992 – develop the (sic) cooperation with CERN practically under the same conditions as the CSFR – and become full-fledged members of CERN.

Read the letter