Chapter III. Attempt and Participation.

Art. 20

Any person who has resolved to commit an act punishable under this Act and has clearly demonstrated this resolve by an act aimed at commission or designed as such is, if the offence has not been completed, guilty of an attempted offence.
For an attempted offence, a lower penalty may be ordered than for a completed offence. This shall, in particular, be done in cases where the attempt indicates that the offender is less dangerous and his/her resolution not as firm as that of persons who complete such offences.

If the attempt could not have led to a completion of the offence because of the interests threatened or the act itself, a penalty may be cancelled.

Art. 21

Penalty shall not be ordered on account of an attempted offence if the offender of his/her own accord abandons his/her intention to commit the offence before it has been completed, provided the commission of the offence has not been thwarted or an impediment or other fortuitous occurrence have prevented the offender's design from being achieved and the offender has, in addition, if he/she has by his/her act caused or expected a danger of completion, prevented its completion or taken measures that would have prevented it, if completion had not been thwarted for other reasons without his/her knowledge or proved impossible.

Article 25
Individual criminal responsibility
3. In accordance with this Statute, a person shall be criminally responsible and liable for punishment for a crime within the jurisdiction of the Court if that person:
(f) Attempts to commit such a crime by taking action that commences its execution by means of a substantial step, but the crime does not occur because of circumstances independent of the person's intentions. However, a person who abandons the effort to commit the crime or otherwise prevents the completion of the crime shall not be liable for punishment under this Statute for the attempt to commit that crime if that person completely and voluntarily gave up the criminal purpose.