‘Freedom from external interference’ focuses on one aspect of the assurance of the sovereign equality and independence of States and the freedom that it entails for each of them: the freedom from external interference and from forcible coercion by other States. In what circumstances may force be used? What weapons and methods of waging war may be used? Who is entitled to use force? The rules of international law relating to war are traditionally divided into the jus in bello, which governs matters such as prohibitions on certain weapons and ways of waging war against other nations, and the jus ad bellum, which limits the circumstances on the right to go to war.