Napoleon dreaded Russia. He persuaded the Sultan of Turkey and the Shah of Persia to declare war, so as to occupy Alexander elsewhere. The czar, however, was loyal to his allies until, on the 14th of June, his army was almost annihilated at Friedland. This loss compelled him to enter into negotiations. On June 25, 1807, the two emperors met on a raft at Tilsit. Napoleon was prepared to do almost anything that would induce Alexander to cease interfering in Europe. An offensive-defensive alliance was concluded, whereby Napoleon agreed not to oppose the expulsion of the Turk or Russia's conquest of Constantinople. The czar meant to carry out the treaty in letter and in spirit, but he soon saw that Napoleon's ambition was limitless, and that he was playing with his ally. This was evident by the proposed partition of Turkey: nothing came of it. Still he accepted Napoleon's invitation to a conference at Erfurt, where he was received by the French Emperor amid a court composed of sovereigns and princes. A convention was signed on the 12th of October, 1808, whereby Alexander promised Napoleon a free hand, in return for the annexation by (p. 200) Russia of Finland and the Turkish provinces on the Danube. This led to a war with Great Britain, Sweden, and Austria, not including Turkey and Persia. Russia acquired Finland, when Alexander, after convoking the Diet, guaranteed its constitution, privileges, and university. In 1809, war again broke out between Austria and France. By the terms of the alliance, Russia had agreed to furnish troops, but they showed that they did not relish fighting with the French. There were two engagements; in one of these, the casualties were one Russian killed and two wounded. By an oversight of Napoleon the Poles serving under him were to cooperate with the Russians, and, far from doing so, they often came to blows. The Russian general constantly sent complaints to the czar. Napoleon made a great effort to appease Alexander by assigning to Russia Eastern Gallicia with a population of 400,000. Alexander declined to be represented in the peace negotiations at Vienna. Napoleon's creation of the Grand Dukedom of Warsaw was a constant menace to Russia. Meanwhile the Russians were uniformly victorious in Turkey; the czar concluded peace only when it was evident that war with France was unavoidable, and that Russia would need every man. It was on this account that he gave easy terms to the hard-pressed Sultan. Russia annexed Bessarabia, part of Roumania, Ismail, and Kilia on the Lower Danube.