“Burundian President Pierre Nkurunziza took another step towards becoming a global outlier on Tuesday. The controversial leader signed a decree to quit the International Criminal Court (ICC), following a parliamentary vote to that effect earlier in October. The decree retracted Burundi’s participation in the Rome Statute, on which the court’s authority is founded. The Burundian presidency announced on Tuesday that it would come into immediate effect, although the Rome Statute states that any decision to withdraw becomes active a year after giving notice to the United Nations secretary general.”
Source: After Burundi, Which Other African States Could Abandon the ICC?