St. Augustine states that kingdoms without justice are mere robberies, and robberies are like small kingdoms; but large Empires are piracy writ large (5th C)

Found in A Select Library of the Nicene and Post-Nicene Fathers of the Christian Church, Vol. 2
St. Augustine (354-430), in Book IV of The City of God, relates the story about the pirate who had been seized and brought before Alexander the Great. The cheeky pirate asks Alexander what is the real difference between a pirate and an emperor apart from the scale of action
Justice being taken away, then, what are kingdoms but great robberies? For what are robberies themselves, but little kingdoms? The band itself is made up of men; it is ruled by the authority of a prince, it is knit together by the pact of the confederacy; the booty is divided by the law agreed on. If, by the admittance of abandoned men, this evil increases to such a degree that it holds places, fixes abodes, takes possession of cities, and subdues peoples, it assumes the more plainly the name of a kingdom, because the reality is now manifestly conferred on it, not by the removal of covetousness, but by the addition of impunity. Indeed, that was an apt and true reply which was given to Alexander the Great by a pirate who had been seized. For when that king had asked the man what he meant by keeping hostile possession of the sea, he answered with bold pride, “What thou meanest by seizing the whole earth; but because I do it with a petty ship, I am called a robber, whilst thou who dost it with a great fleet art styled emperor.”
Somali pirates are in the news at the moment so it seemed appropriate to see what some of the great political philosophers had to say on the topic. Here is St. Augustine with his view on the matter. In many respects, his approach is similar to that of Gustave de Molinari’s on political parties as “armies”. Kingdoms and princedoms are like a confederacy of robbers who loot the cities and countryside they control. Next comes his charming story of the pirate who confronted Alexander the Great over the key difference between himself with one ship and the Emperor with his fleet. It was only a matter of scale.