Originally Posted by
ph-sbe
You are partially right, and let me explain. Many countries have laws prohibiting their citizens from committing certain acts. A lot of countries have laws on the books to prohibit sexual predator tourism, making it possible to prosecute child abuse in their own countries if committed by a citizen or permanent resident. In those cases, there is an existing relationship between the country and the individual (NB. being the perpetrator)
So, under these conditions, Australia, Malaysia, the Netherlands et al must rely on Ukrainian prosecution of the perpetrators of the MH17 shoot down, whoever they might be.
Only the Ukraine or Russia could issue an arrest warrant or request extradition to face trial, in that case.