Politics
Politics (from , meaning "affairs of the cities") is the process of making decisions that apply to members of a group.
Power politics
Power politics (or, in German, Machtpolitik) is a theory in international relations, which contains the idea that distributions of power and interests, or changes to those distributions, are fundamental causes of war and of system stability.
The concept of power politics provides a way of understanding systems of international relations: in this view, nations compete for the world's limited resources and it is to an individual nation's advantage to be manifestly able to harm others. Power politics prioritizes national self-interest over the interests of other nations or the international community, and thus may include threatening one another with military, economic or political aggression to protect one nation's own interest.