And now the pendulum swings back, and in the doctrine of embargo the really neutral merchant comes into his own. ‘Embargo’ is the action taken by a neutral Government in regard to goods which have been declared to be contraband by one or other of the belligerents; and the point to be emphasised is that it springs directly out of the doctrine of ‘continuous voyages.’ In order to prevent neutral ships destined to its ports with goods which one of the belligerents treats as contraband being detained and searched at sea, it prohibits the export of those goods from its own ports. The embargo satisfies the belligerent that these goods will not go out of the neutral country, and therefore will not get directly or indirectly into the hands of the enemy; he therefore feels justified in letting those ships go free, for the doctrine of ‘continuous voyages’ cannot apply. Now the reason for the embargo is that the merchants of the neutral country require the commodity for themselves. Suppose, for example, that Spanish merchants require copper for their own use; then in order to ensure cargoes of copper coming direct to Spanish ports without being interfered with at sea by the search of belligerent cruisers, the Spanish Government might put an embargo on copper: that is to say, might prohibit its export. There could be no better evidence that the Spanish merchants were importing the copper for their own trade, and that none of it would get through to the enemy. I can therefore best describe an embargo thus: It is action taken by a neutral Government to protect those of its merchants who do not desire to engage in trade in contraband from the consequences which would result from the action of those who do. There is only one point in connexion with this doctrine which requires attention. Is the action thus taken by the neutral Government a breach of its neutrality to the other belligerent? For, undoubtedly, it does act favourably to the belligerent who has declared the goods to be contraband. The answer is simple. Once admit the strict logic of the doctrine of ‘continuous voyages,’ it follows that an embargo is a measure neither directed against one belligerent nor imposed to favour the other. It is simply a measure of self-defence, taken in order to prevent the national industries from suffering from the undoubted belligerent right of detention at sea and possible seizure. There are other occasions in which an embargo may be resorted to, as in the case of the embargo on rubber imported by Great Britain to which reference has been made above.[20] That is purely a municipal question with which international law can have no concern. _Blockade_