Cyber domain challenges include attribution of cyber activity to state or nonstate parties and the tyranny of speed. Both factors defy decisionmaking and the effectiveness of extant countermeasures. Yet the current framework, within the scope of international law governing a state's use of force as codified in jus ad bellum and jus in bello, must be praised as fundamentally adequate in regard to the operational issues that confront the military. Operationally speaking, the cyber domain coexists with the land, sea, air, and space domains, and since commanders must master those as well, they discover that current laws governing the use of force and military operations can be applied to cyber, whose contribution includes controlling effects to reduce collateral damage.