PENAL CODE OF BOTSWANA
PART I - General Provisions
General Rules as to Criminal Responsibility (ss 6-20)
12. Intoxication
(1) Except as provided in this section, intoxication shall not constitute a defence to any criminal charge.
(2) Intoxication shall be a defence to any criminal charge if by reason thereof the person charged at the time of the act or omission complained of did not know that such act or omission was wrong or did not know what he was doing and-
(a) the state of intoxication was caused without his consent by the malicious or negligent act of another person; or
(b) the person charged was by reason of intoxication insane, temporarily or otherwise, at the time of such act or omission.
(3) Where the defence under subsection (2) is established, then in a case falling under paragraph (a) thereof the accused person shall be discharged, and in a case falling under paragraph (b) the provisions of section 11 of this Code and of Part XII of the Criminal Procedure and Evidence Act shall apply.
(4) Intoxication shall be taken into account for the purpose of determining whether the person charged had formed any intention, specific or otherwise, in the absence of which he would not be guilty of the offence.
(5) For the purposes of this section, "intoxication" shall be deemed to include a state produced by narcotics or drugs.
Intoxication - national proceedings
EDIT.