Related Rule
Practice Relating to Rule 64. Conclusion of an Agreement to Suspend Combat with the Intention of Attacking by Surprise the Adversary Relying on It
Ethiopia’s Penal Code (1957) punishes “whosoever, having been officially informed of an armistice or peace treaty duly concluded, contrary to orders given continues hostilities, or in any other way knowingly infringes one of the agreed conditions”. 
Ethiopia, Penal Code, 1957, Article 289.