Law reacts to the progression of scientific technology in the end. Though conservative, changes are beginning to take place due to Artificial Intelligence (AI). AI is automating conventional legal works, creating a new industry namely Legal-Tech. This paper investigates the characteristics and flow of legal-AI and computational law while focusing on the applicability of AI to international law. Mainly, the paper reviews three critical areas: dispute resolution, trial prediction, and machine translation, respectively. International law has different characteristics than the domestic law applied in each country. Unlike domestic law, international law has not been aggregated from a pandect, and it is a still daunting task to draw any meaningful insights for further analysis due mainly to limited data (i.e., trial cases and precedents). Nevertheless, AI is already penetrating the legal ecology system, and international law would eventually accept the influx of such changes exhibiting greater force.