ICCPR Article 15 (2)

<div>International Covenant on Civil and Political Rights</div><div><br></div><div><b>Article 15</b></div><div><br></div><div>2. Nothing in this article shall prejudice the trial and punishment of any person for any act or omission which, at the time when it was committed, was criminal according to the general principles of law recognized by the community of nations.</div>