It gathered Bosnian Croat politicians and intellectuals such as Ivan Lovrenović, few members of the Catholic clergy (local franciscan friars and Sarajevo archbishop)[1] opposed to the policy of HDZ BiH and the creation of a Croat entity in Bosnia and Herzegovina in 1992, Herzeg Bosnia, calling it "irresponsible".
In assembly's Declaration they called for the end of war and reconciliation of Bosniaks and Croats, proposing federalization of the country by dividing it in multiethnic cantons.
This was a reaction to the concept of Boasnia and Herzegovina organized in three ethnic federal units (Bosniak-, Croat- and Serb-dominated, respectively), the proposal that was discussed by the international community at the peace talks in Geneva at the time.
The Declaration's concept gained international, most notably American support and paved the road to the Washington Agreement in March 1994., creating Bosniak-Croat Federation, composed of 10 cantons.
After Bosnian War ended in 1995 and the Dayton Agreement was signed, CNC continued working as an NGO, opposing proposals to create a Croat-majority federal unit in Bosnia and Herzegovina.