context: In practice, because of sovereignty, any state can withdraw from any treaty at any time. The question of whether this is permitted is really a question of how other states will react to the withdrawal; for instance, another state might impose sanctions or go to war over a treaty violation.
question: কোন বিষয়টা প্রকৃতপক্ষে একটা চুক্তি থেকে সরে আসার অনুমতি রয়েছে কি না, তা নির্ধারণ করে?
answers: how other states will react