Under this increased importance of the Isthmus, we cannot safely anticipate for the future the cheap acquiescence which, under very different circumstances, has been yielded in the past to our demands. Already it is notorious that European powers are betraying symptoms of increased sensitiveness as to the value of Caribbean positions, and are strengthening their grip upon those they now hold. Moral considerations undoubtedly count for more than they did, and nations are more reluctant to enter into war; but still, the policy of states is determined by the balance of advantages, and it behooves us to know what our policy is to be, and what advantages are needed to turn in our favor the scale of negotiations and the general current of events. If the decision of the nation, following one school of thought, is that the weaker we are the more likely we are to have our way, there is little to be said. Drifting is perhaps as good a mode as another to reach that desirable goal. If, on the other hand, we determine that our interest and dignity require that our rights should depend upon the will of no other state, but upon our own power to enforce them, we must gird ourselves to admit that freedom of interoceanic transit depends upon predominance in a maritime region--the Caribbean Sea--through which pass all the approaches to the Isthmus. Control of a maritime region is insured primarily by a navy; secondarily, by positions, suitably chosen and spaced one from the other, upon which as bases the navy rests, and from which it can exert its strength. At present the positions of the Caribbean are occupied by foreign powers, nor may we, however disposed to acquisition, obtain them by means other than righteous; but a distinct advance will have been made when public opinion is convinced that we need them, and should not exert our utmost ingenuity to dodge them when flung at our head. If the Constitution really imposes difficulties, it provides also a way by which the people, if convinced, can remove its obstructions. A protest, however, may be entered against a construction of the Constitution which is liberal, by embracing all it can be constrained to imply, and then immediately becomes strict in imposing these ingeniously contrived fetters.