Following international recognition of Bosnia on 6 April 1992, armed conflict erupted between the different communities. As a result, on 8 April 1992, the Bosnian Croats created the HVO, backed by the Croatian Army. The zones which they had control over were contained within the Croatian Community of Bosnia-Herzegovina. Blaškić was in command of the HVO troops in the Lašva Valley in central Bosnia, which was inhabited, in the majority, by Muslims and Croats. Between May 1992 and January 1993, relations between the two communities became increasingly strained. This peace plan gave definition to a decentralised Bosnia-Herzegovina, organised into ten provinces, each benefiting from substantial autonomy and each being administered by a democratically elected local government. Under this plan, the Lašva Valley was attached, for the greater part, to a province where the principal responsibilities were attributed to the Croats. Muslims wanted Coatian teritories as satisfaction for teritories lost from Serbs. The Croats are expelled from Travnik, Bugojno, Kakanj, Vareš, Konjic, Fojnica etc.
War crimes
In 1996 the International Criminal Tribunal for the Former Yugoslavia indicted Blaškić for crimes committed by troops under his command against Bosniaks in central Bosnia, particularly the Lašva Valley, including grave breaches of the Geneva Conventions, violations of the laws or customs of war and crimes against humanity. In reaction, Franjo Tuđman named Blaškić Inspector General of the Croatian Army. Later in the year, Blaškić was told by his military superiors that it was his duty to voluntarily surrender and he reluctantly did so; his trial began in 1997. On 3 March 2000, The First Trial Chamber of the ICTY handed down its verdict, which condemned Blaškić to 45 years in prison. The First Trial Chamber charged Blaškić, based on his individual personal responsibility and on his responsibility as hierarchical superior, on the following counts:
The case was in appeal until July 2004 when the ICTY appeals panel dismissed 16 of 19 counts in the initial indictment, notably the claim that Blaškić had command responsibility for the massacre in Ahmići and that Ahmići was not a legitimate military target. The decision did not assess the nature of Croat-Muslim war in Bosnia in 1993–94; it accepted the defense claim that there existed a "double chain of command". The appeals panel reaffirmed less serious charges, including responsibility for the inhumane treatment of POWs. It reduced Blaškić's prison sentence to nine years, purportedly due to his good behavior, clear prior record, poor health, voluntary surrender and his young children. His defense applied for an early release as he had served eight years and four months already; the request was granted on 29 July 2004. Exactly one year later, ICTY prosecutor Carla Del Ponte filed a motion for new trial, citing new evidence. The Appeals Chamber dismissed this motion on 23 November 2006.