Final answer:
The term balance of power refers to a situation in international relations where no one nation or region is much more powerful militarily than others.
Step-by-step explanation:
The term balance of power refers to a situation in international relations where no one nation or region is much more powerful militarily than others. It is a classic realist way of understanding the structure of the international system. In an anarchic system, states aim to create a balance of power to protect themselves and their interests. This can lead to three different types of polarity: unipolar, bipolar, and multipolar. The achievement of a perfect balance of power may not be possible, but general stability and the absence of violence between nations can be achieved.