translation.bs: "Pitanje Kosova ostaje glavni izazov za regionalnu stabilnost na Balkanu," izjavio je u utorak (11. septembar) bugarski ministar vanjskih poslova Ivailo Kalfin na međunarodnoj konferenciji u Sofiji o sigurnosti u jugoistočnoj Evropi.
translation.en: "The Kosovo issue remains the main challenge to regional stability in the Balkans," Bulgarian Foreign Minister Ivailo Kalfin said Tuesday (September 11th) at an international conference in Sofia on security in Southeast Europe.