Pericles Lost the Blockade of Samos for 14 Days — and the Samians Ran the Sea
Closing the Sea: Lessons from Ancient Mediterranean Blockades
Naval strategists have always studied the past, and four ancient Mediterranean sieges still speak to modern blockade problems: Samos in 440–439 BCE, Syracuse in 413 BCE, Rhodes in 305–304 BCE, and Lilybaeum and Drepana in 250–249 BCE. Drawing on Thucydides, Diodorus, and Polybius, Dr. Stephen DeCasien argues that blockade is a continuing contest, not a condition won by sea superiority alone — persistence, reversibility, partial access, and mounting costs all decide the outcome.
For fourteen days, the diversion of part of the Athenian fleet was enough to reopen Samian access to the sea, demonstrating the importance of persistence in maintaining a blockade.