Offensive realism predicts that the United States will send its army across the Atlantic when there is a potential hegemon in Europe that the local great powers cannot contain by themselves.

The sad fact is that international politics has always been a ruthless and dangerous business, and it is likely to remain that way.

Simply put, the most powerful state is the one that prevails in a dispute.

The Soviet Union and its empire disappeared in large part because its smokestack economy could no longer keep up with the technological progress of the world's major economic powers.

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

The liberal tradition has its roots in the Enlightenment, that period in the eighteenth-century Europe when intellectuals and political leaders had a powerful sense that reason could be employed to make the world a better place.

The German air offensives against British cities in World Wars I and II not only failed to coerce the United Kingdom to surrender, but Germany also lost both wars.