A state's potential power is based on the size of its population and the level of its wealth.

I believe that the existing power structures in Europe and Northeast Asia are not sustainable through 2020.

States have two kinds of power: latent power and military power.

When World War II started on September 1, 1939, the German army contained 3.74 million soldiers and 103 divisions.

The ideal situation for any state is to experience sharp economic growth while its rivals' economies grow slowly or hardly at all.

In the 1930s, Adolf Hitler believed that his great-power rivals would be easy to exploit and isolate because each had little interest in fighting Germany and instead was determined to get someone else to assume the burden. He guessed right.

Decapitation is a fanciful strategy.