“No one shall be held guilty of any criminal offence on account of any act or omission which did not constitute a criminal offence under national or international law at the time when it was committed. Nor shall a heavier penalty be imposed than the one that was applicable at the time the criminal offence was committed.”
“the present case had in fact concerned the “retrospective” application of the criminal law, seeing that the new legislation had been applied when the time during which recidivism was possible under the previous legislation had no longer been running but had already expired.”