Germany there were those who would throw themselves into the arms of the foreigner, and risk all they had, rather than submit to military government and religious persecution. Nor was Stralsund alone in its victory. Glückstadt proved to Tilly as difficult a morsel to digest as Stralsund had been to Wallenstein, and in January 1629 he was forced to raise the siege. Matters had now reached a deadlock. Christian could not venture on the mainland and his enemies could not reach him at sea. [Sidenote: =The peace of Lübeck, 1629.=] Wallenstein saw the importance of bringing the Danish war to an end before Sweden appeared on the scene, and opened negotiations for peace. In May the treaty of Lübeck was signed. Christian surrendered all his claims upon the ecclesiastical lands in Germany and received back his hereditary dominions. [Sidenote: =Causes of the Imperialist success.=] Ten years had elapsed since the fatal day when the revolted Bohemian diet elected Frederick, Elector Palatine, to the throne of Bohemia, and the margrave of Anspach had exultingly cried, ‘Now we have the means of upsetting the world.’ In those ten years the German world had indeed been upset but not in the sense of the margrave’s prophecy. It was the very fact that in their attack upon the House of Austria the Calvinists were attempting to upset the world of Germany, were attempting to revolutionise German institutions, and were not in any way representing the rights of Protestantism, or the independence of the German princes, that deprived them of support in Germany outside their own body. Cautious and shrewd rulers like John George of Saxony looked upon them as the party of anarchy, and upon the Emperor as the representative of order. The recklessness with which Frederick and his advisers let Mansfeld and Christian of Brunswick loose upon the unoffending people, and outraged the sacred name of religion with burning homesteads and tortured peasants, lost them the respect of every right-thinking man. Men felt that to revolutionise Germany and to plunder Germans was not the way to defend the cause of Protestantism, and welcomed the successes of Maximilian and the League in Bohemia, and even in the Palatinate, as securities for the restoration of order upon the traditional lines. [Sidenote: =Change brought about by Wallenstein and his army.=]