summarise in own words:
Article 13
Exercise of jurisdiction
The Court may exercise its jurisdiction with respect to a crime referred to in article 5 in accordance with the
provisions of this Statute if:
(a) A situation in which one or more of such crimes appears to have been committed is referred to the Prosecutor by a State Party in accordance with article 14;
(b) A situation in which one or more of such crimes appears to have been committed is referred to the Prosecutor by the Security Council acting under Chapter VII of the Charter of the United Nations; or
(c) The Prosecutor has initiated an investigation in respect of such a crime in accordance with article 15.