PART 2 - INTERNATIONAL CRIMES AND OFFENCES AGAINST ADMINISTRATION OF JUSTICE
General principles of criminal law
12.
General principles of criminal law—
(1)For the purposes of proceedings for an offence against section 9 or section 10 or section 11,—
(c)a person charged with the offence may rely on any justification, excuse, or defence available under the laws of New Zealand or under international law; and
Other defences - national proceedings
EDIT.