Brussels, 07/02/2007 (Agence Europe) - Visiting Sofia, the capital of Bulgaria, on Tuesday, UK Minister of State for Europe Geoff Hoon, cautioned Bulgaria not to seek to re-open the two nuclear reactors it closed when it joined the European Union last month. Reactors 3 and 4 at the Kozloduy nuclear plant (Bulgaria's only nuclear plant) closed on 31 December 2006 as agreed by Bulgaria in order to be able to join the EU on 1 January 2007. 'We should respect the details of the accession treaty....