Herzegovina
Herzegovina ( or ; Serbo-Croatian: "Hercegovina", Херцеговина, ) is the southern region of Bosnia and Herzegovina. While there is no official border distinguishing it from the Bosnian geographical region, it is sometimes asserted that the borders of the region are Dalmatia to the southwest, Montenegro to the east, Mount Maglić to the northeast, and Mount Ivan to the north. Measurements of the area range from , or around 22% of the total area of the present-day country, to , around 24% of the country.
Croatian Republic of Herzeg-Bosnia
On 18 November, the autonomous Croatian Community of Herzeg-Bosnia (HZ-HB) was established, it claimed it had no secessionary goal and that it would serve a "legal basis for local self-administration". The decision on its establishment stated that the Community will "respect the democratically elected government of the Republic of Bosnia and Herzegovina for as long as exists the state independence of Bosnia and Herzegovina in relation to the former, or any other, Yugoslavia". Boban was established as its president. One of Boban's advisers stated that Herzeg-Bosnia was only a temporary measure and that the entire area will in the end be an integral part of Bosnia and Herzegovina. From its inception the leadership of Herzeg-Bosnia and HVO held close relations to the Croatian government and the Croatian Army (HV). At a session of the Supreme State Council of Croatia, Tuđman said that the establishment of Herzeg-Bosnia was not a decision to separate from Bosnia and Herzegovina. On 23 November, the Bosnian government declared Herzeg-Bosnia unlawful.