On the other hand, it cannot be denied that in many circumstances it would take more than superhuman virtue and intelligence rightly to operate that ideal combination and maintain an equal balance between national selfishness and philosophical idealism. When it came to practice, Jefferson showed himself just as canny as any European diplomat and never neglected an opportunity to further the interests of his country. This appeared in the very first letters he sent to Europe after taking charge of the foreign policies of the United States. Communications were slow at the time. Jefferson was kept regularly informed of developments in France by Short, his former secretary, left in charge in Paris, who sent him weekly letters; but they averaged eleven weeks and a half in transit, while of his answers "the quickest were of nine weeks and the longest of near eighteen weeks coming." Information through the British papers took about five or six weeks to reach America but was not to be relied upon, and Jefferson gave definite instructions to Short for "news from Europe is very interesting at this moment, when it is so doubtful whether a war will take place between our two neighbors."[267] This was indeed at the time his main preoccupation. War between Spain and England seemed not only possible but probable, and Jefferson saw in it an opportunity to press the claims of the United States to the navigation of the Mississippi. The question was not "the claims of Spain to our territory north of the thirty first degree and east of the Mississippi (they never merited the respect of an answer), but the navigation of the Mississippi and that was not simply to recognize the American rights on the river." Navigation "cannot be practiced without a port, where the sea and river vessels may meet and exchange loads, where those employed about them may be safe and unmolested." The right to use a thing comprehends a right to the means necessary to its use, and without which it would be useless. Jefferson added that he could not answer that "the forbearance of our western citizens would last indefinitely, and that a moment of impatience, hazard or other considerations might precipitate action on their part." On the other hand, the United States were in no position to antagonize openly even weak Spain, and in case nothing should develop Carmichael was instructed to bide his time: