The history of the Triplice may be shortly related here as, along with his navy, it is regarded by the Emperor as the chief factor in the preservation of the world's peace, and is, in fact, as has been said, the foundation of his foreign policy. It arose from Bismarck's desire to be independent of Russia and from his dread of a European coalition--for example, that of France, Austria, and Russia--against the German Empire. "We had," Bismarck writes, "carried on successful war against two of the European Great Powers (Austria and France), and it became advisable to withdraw at least one of them from the temptation to revenge which lay in the prospect an alliance with others offered. It could not be France, as any one who knew the history and temperament of the two peoples could see, nor England owing to her dislike of permanent alliances, nor Italy as her support alone was insufficient against an anti-German coalition; so that the choice lay between Austria-Hungary and Russia." For many reasons Bismarck would have preferred the Russian alliance, among others the traditional dynastic friendship between the two countries and the fact that no natural political or religious causes of conflict existed between them; while a union with Austria was less reliable, owing to the changeable nature of her public opinion, the heterogeneousness of her Magyar, Slav, and Catholic populations, and the loss of influence by the German element with the governing body. On the other hand, however, an alliance with Austria would be nothing new, internationally, as such a connection theoretically arose from the former connection of Germany and Austria in the Holy Roman Empire. While weighing the matter, a threatening letter from Czar Alexander II to William I, in which he called on Germany to support his Balkan policy, and said that if he refused peace could not last between their two countries, decided Bismarck in favour of Austria. The chief opponent of the new Alliance was William I, who was moved by personal chivalric feelings towards his nephew, Czar Alexander; but, disregarding this, because confident of eventually persuading his imperial master, Bismarck went to Gastein and there settled with the Austrian Minister, Count Andrassy, the principles of the Alliance. Italy came into the Alliance in 1883 as the immediate result of France obtaining a protectorate in Tunis, in return, partly, for her acquiescence in the English acquisition of Cyprus. The protectorate aroused general indignation and fear in Italy, and though it meant a large expenditure on naval and military armament, on May 20, 1882, she joined the Dual Alliance for five years, and thus turned it into the Triplice.