Orba Manullang, Sardjana, Irma Rachmawati Maruf, Hadi Priyono, Tamaulina Br Sembiring, and Prasetyono Hendriarto. 2022. “International Law to Understand Russia’s Invasion of Ukraine 2022: Between Self-Defense and Defiance”. LEGAL BRIEF 11 (2):760-69. https://legal.isha.or.id/index.php/legal/article/view/188.