Most of the time, snubbing international law does not bring about the penalties that are also immediately inflicted with a violation of municipal law. But just as international law has always drawn its strength from horizontal enforcement — the pressure that states bring to bear upon each other to comply with the law — punishment and sanction come in like manner.

Aquino, R. C. (2020, January 8). The destructive contempt for international law. The Manila Times, pp. A1, A5.