[excerpt]
Constitution ofCroatia
(amended2001)
Article 31
No one shall be punished for an act which before its commission was not defined as a punishable offence by law or international law, norhe maybe sentenced to a penalty which was not defined by law. If a less severe penalty is determined by law after the commission of an act, such penalty shall be imposed.
No one may be tried anew nor punished in criminal proceedings for an act for which he has already been acquitted or sentenced by a final court judgment in accordance with law.
The cases and reasons for the renewal of court proceedings under section 2 of this Article may be provided only by law, in accordance with the Constitution and an international agreement.