The studies of International Relations includes relationships between political entities of state , governmental , and multinational fields .
In both cases , the field studies relationships between political entities -LRB- polities -RRB- such as states , sovereign states , empires , inter-governmental organizations -LRB- IGOs -RRB- , international non-governmental organizations -LRB- INs -RRB- , non-governmental organizations -LRB- NGOs -RRB- , and multinational corporations -LRB- MNCs -RRB- , and the wider world-systems produced by this interaction .
International relations