Meanwhile, other European powers looked forward to selling their alliance on the best possible terms. Sweden and Prussia both approached the stronger power first. Bernadotte, on behalf of Sweden, was prepared for a French alliance if France would favour the Swedish acquisition of Norway. Napoleon, on February 25, not only refused these terms, but ordered Sweden to enforce the continental system under pain of a French occupation of Swedish Pomerania. This threat Sweden ventured to ignore. Prussia, lying directly between the two future belligerents, was in a more dangerous position. Neutrality was impossible, because her neutrality would not be respected. She first offered her alliance to Napoleon in return for a reduction of the payments due to France and a removal of the limit imposed on her army. Napoleon did not reply to this offer at once. Meanwhile the movement of French troops already mentioned and the increase of the French garrisons on the Oder, though primarily intended for the defence of Poland, caused great alarm in Prussia and resulted in preparations to resist a French attack. In July Napoleon finally refused to discuss the Prussian terms. Ever since his marriage he had been inclined more and more to an Austrian alliance. On March 26 of this year Otto, his ambassador at Vienna, had received information that France would support Austria if she would protest against the occupation of Belgrade by the Serbs. Napoleon even assured Otto that he was prepared to undertake any engagement that Austria desired. Rest was, however, essential to Austria. The military disasters of 1809 had been followed by national bankruptcy, and with the government paper at a discount of 90 per cent. she dared not incur further liabilities.