A. T. Mahan,
Sea Power in its Relations to the War of 1812…
“ Property belonging to private individuals, but embarked in that process of transportation and exchange which we call commerce, is like money in circulation. It is the life-blood of national prosperity, upon which war depends; and as such is national in its employment, and only in ownership private. To stop such circulation is to sap national prosperity; and to sap prosperity, upon which war depends for its energy, is a measure as truly military as is killing the men whose arms maintain war in the field. Prohibition of commerce is enforced at will where an enemy's army holds a territory ”
