LISBON (Reuters) – Bulgaria won the right to spell the euro common currency as «evro» in its Cyrillic language on Thursday, putting aside a spat that had threatened to cloud an EU summit, officials said. The EU newcomer has fought hard for the right to spell the euro according to Cyrillic rules despite the European Central Bank’s insistence that the euro be spelled the same way across the 27-nation bloc. The Black Sea country argued that «evro» is the correct transliteration of «euro» into Cyrillic. It had threatened to block some EU diplomatic initiatives, possibly even the signing of a new treaty for the bloc to be agreed at the summit. Bulgarian officials said EU leaders had agreed that it could use «evro» on all official EU documents. «The problem is settled. It will be evro,» a Bulgarian Foreign Ministry spokesman said. Portuguese Foreign Minister Luis Amado, whose country holds the EU’s rotating presidency, confirmed at a news conference that the issue was one of a number of potential sticking points for the summit that had been resolved, giving no other details. The question of whether Bulgaria will be able to use «evro» on banknotes if it enters the single currency zone – something that is not expected until well after 2010 – remains open.