PART I—PRELIMINARY
International Crimes
7. (2) For the purposes of any such proceedings—
(a) the provisions of Kenyan law and the principles of criminal law applicable to the offence under Ken¬yan law shall apply; and
(b) a person charged with the offence may rely on any justification, excuse, or defence available under the laws of Kenya or under international law:
Provided that—
(ii) the fact that an act done outside Kenya is not an offence under the law of the place where it was done shall not be held to be any justification, excuse, or defence.
Other defences - national proceedings
EDIT.