Through the centuries major changes have taken place in the ability of states to prevent the movement of ships or particular goods over the sea lanes of the world.1 Some of the changes have been wrought by technological evolution, some by increasing importance of seaborne trade, and some by alterations in the structure of international relations. The combined effect has profoundly af- fected both the way maritime blockades are conducted in the twenty-first cen- tury and the means employed for them. In large measure, it has also rendered the traditional law of blockade obsolete.
Barnett, Roger W.
"Technology and Naval Blockade,"
Naval War College Review: Vol. 58
, Article 5.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol58/iss3/5