Which concept refers to a condition of equal strength between opposing nations?

The concept that refers to a condition of equal strength between opposing nations is known as the Balance of Power. This concept is integral to understanding international relations and diplomacy. It suggests that national security is enhanced when military capabilities are distributed so that no one nation is strong enough to dominate the others.

Historically, the Balance of Power has played a crucial role in preventing conflicts and maintaining peace among nations, particularly during periods where varied alliances and rivalries existed. It serves as a guiding principle in negotiations and military strategy, as countries aim to ensure that they do not become vulnerable to an overwhelming adversary.

In contrast, a power struggle implies a contest for control or dominance which doesn’t necessarily involve a state of equilibrium. The balance of trade focuses on the economic comparison of exported versus imported goods, while mutual defense pertains to agreements between nations to support each other in times of conflict, which is more about alliances than the equilibrium of power itself. Thus, it is the Balance of Power that accurately reflects the concept of equal strength between opposing nations.