1.
the distribution of power among two or more nations, where the pattern of force and dominance among them is balanced in such a way that no single nation has dominance over the others
2.
the power of a single country, group, or person to affect a situation decisively by supporting either of two opposing sides whose powers are equally balanced
3.
a situation in which each country in a group has equal military and political power so that no one country can control another