There is, however, one caution to be given from the military point of view, beyond the need of which the world has not yet passed. Military positions, fortified posts, by land or by sea, however strong or admirably situated, do not confer control by themselves alone. People often say that such an island or harbor will give control of such a body of water. It is an utter, deplorable, ruinous mistake. The phrase indeed may be used by some only loosely, without forgetting other implied conditions of adequate protection and adequate navies; but the confidence of our own nation in its native strength, and its indifference to the defense of its ports and the sufficiency of its fleet, give reason to fear that the full consequences of a forward step may not be weighed soberly. Napoleon, who knew better, once talked this way. “The islands of San Pietro, Corfu, and Malta,” he wrote, “will make us masters of the whole Mediterranean.” Vain boast! Within one year Corfu, in two years Malta, were rent away from the state that could not support them by its ships. Nay, more: had Bonaparte not taken the latter stronghold out of the hands of its degenerate but innocuous government, that citadel of the Mediterranean would perhaps—would probably—never have passed into those of his chief enemy. There is here also a lesson for us. 32. APPLICATION OF THE MONROE DOCTRINE[107] _Anglo-American Community of Interests_ The writer has too often already discussed, directly or incidentally, the strategic situation which finds its center in Panama to repeat the same here; but one or two remarks about the Monroe doctrine may be not out of place. Accepting as probably durable the new conditions, which have so largely modified the nation’s external policy in the direction of expansion, there is in them nothing to diminish, but rather to intensify, the purpose that there shall be no intrusion of the European political system upon territory whence military effect upon the Isthmus of Panama can be readily exerted. For instance, should a change anticipated by some occur, and Holland enter the German Empire, it will be advantageous that it should even now be understood, as it then would be necessary for us to say, that our consent could not be given to Curaçao forming part of that incorporation. The Isthmus of Panama—in addition to its special importance to us as a link between our Pacific and Atlantic coasts—sums up in itself that one of the two great lines of communication between the Atlantic and the farther East which especially concerns us, and we can no more consent to such a transfer of a fortress in the Caribbean, than we would ourselves have thought of acquiring Port Mahon, in the Mediterranean, as a result of our successful war with Spain.