Traditionally international law had states as its sole subjects. With the proliferation over the last century of international organizations, they have been recognized as its subjects as well. More recent developments in [international human rights law]?, [international humanitarian law]? and [international trade law]? (e.g. NAFTA? Chapter 11 actions) have lead to individuals and corporations being increasingly seen as subjects of international law as well, something which however goes against the traditional legal orthodoxy. Since international law increasingly governs much more than merely relations between soverign states, it may be better defined as law decided and enforced at the international, as opposed to national, level.
International legal norms can be customary? or conventional?.
See also nationality, terrorism, environmental agreements, state, territorial integrity.