Izetbegović consistently promoted the idea of a multi-ethnic Bosnia under central control , which seemed a hopeless strategy under the circumstances . The Bosnian Croats , disillusioned with the Sarajevo government and supported militarily and financially by the Croatian government , increasingly turned to establishing their own ethnically-based state of '' Croatian Republic of Herzeg-Bosnia '' in Herzegovina and Central Bosnia . The Croats pulled out of the Sarajevo government and fighting broke out in 1993 . In some areas local armistices were signed between the Serbs and Croats . Croat forces launched their first attacks on Bosniaks in central Bosnia in June 1992 , but these failed . The Graz agreement caused deep division among Bosnian Croats and strengthened separatist Herzeg-Bosnia , and led to the Lašva Valley ethnic cleansing campaign against Bosniak civilians from May 1992 to March 1993
Lašva Valley ethnic cleansing
Lašva Valley ethnic cleansing
Alija Izetbegović