Paragraph 1
Each State Party shall take such measures as may be necessary to establish its jurisdiction over the offences referred to in article 4 in the following cases:
(a)
When the offences are committed in any territory under its jurisdiction or on board a ship or aircraft registered in that State;
(b)
When the alleged offender is a national of that State;
(c)
When the victim is a national of that State if that State considers it appropriate.