The examination of the justness of any law enforcement operation rests on two basic principles: (1) the rationale for taking the law enforcement measures; and (2) the principles governing the conduct of the law enforcement operation. On the question of rationale, any law enforcement measure is justified if there is a legal basis for it; if the measures are taken as a last resort or in self-defense. Unprovoked aggression is always wrong and makes defensive measures immediately and absolutely necessary. On the question of the conduct of the operation, the principles of proportionality and discrimination should apply. Proportionality requires that the force used should be proportionate to the goal of the law enforcement operation and, whenever possible, civilians should be spared from violence. There is thus a sound basis to take the law-enforcement measures against the TPLF clique.