"a discipline, which tries to explain political activities across state boundaries".
Scope of International Relations
It is known by now that international relations encompass a myriad of discipline. Attempts to structure and intellectualize it have often been thematically and analytically confined to boundaries determined by data.
The core concepts of international relations are International Organization,
International Law, Foreign Policy, International Conflict, International
Economic Relations and Military Thought and Strategy.
International/Regional Security, Strategic Studies, International Political
Economy, Conflict/War and Peace Studies, Globalization, International
Regimes.
Moreover it covers , state sovereignty, ecological sustainability, nuclear proliferation, nationalism, economic development, terrorism, organized crime, human security, foreign interventionism and human rights.
These have been grounded in various schools of thought (or traditions) notably Realism and Idealism.
Example:
International relations are thus concerned with every form of interaction between and amongst nations. Such interactions can also occur between corporation and social groups. Examples are interactions between member states of the OPEC or the International Human Rights Commissions.
The moment such interactions cross a state boundary it is of interest to the study of International Relations. International relations recognize and respond to the fact that the foreign policy goals that nations pursue can be a matter of permanent consequences to some or all of the others.
International Relations Defined:
Since its inception, international relations has been defined in many ways. Writers differ greatly upon the definition of the subject.
It appears quite natural, as Stanley Hoffman says, "how could one agree once and for all upon the definition of a field whose scope is in constant flux, indeed,