The coronavirus affected our lives. This effect is not only related to the field of health. Our old habits, especially our social life, eating habits, ways of gathering, our education life, our types of work, have been replaced by new things. The law that regulates the basic rules of living together also got its share. The world is at a new turning point. Law will be a part of this change. The laws of the states will be reorganized with the “pandemic” agenda. The issue of “biological attack” among the elements that threaten the society will not be uncertain, and my society will appear as an incident. This cycle of change is also likely to affect international relations. In international law, there will be cases that will come to the agenda due to this issue. Again, the applications to be made by the states on this issue seem to occupy the agenda of international courts and institutions. In this article, we will try to evaluate possible situations through the current international legal order.