England and Russia had, however, some difficulty in securing allies. Although in violation of his promises to Austria, Napoleon had accepted the title of King of Italy from the Senate of the Italian Republic, and had crowned himself with the Iron Crown of Lombardy (March, 1805), the Ministers at Vienna would have preferred peace, if that had been possible; and their master reluctantly consented to a war against Napoleon when war in some form or other seemed inevitable. The policy of Prussia was doubtful. For two years past Napoleon had made every effort to induce Prussia to enter into alliance with himself. After the invasion of Hanover he had doubled his attentions to the Court of Berlin, and had spared nothing in the way of promises and assurances of friendship to win the King over to his side. The neutrality of Prussia was of no great service to France: its support would have been of priceless value, rendering any attack upon France by Russia or Austria almost impossible, and thus enabling Napoleon to throw his whole strength into the combat with Great Britain. In the spring of 1804, the King of Prussia, uncertain of the friendship of the Czar, and still unconvinced of the vanity of Napoleon's professions, had inclined to a defensive alliance with France. The news of the murder of the Duke of Enghien, arriving almost simultaneously with a message of goodwill from St. Petersburg, led him to abandon this project of alliance, but caused no breach with Napoleon. Frederick William adhered to the temporising policy which Prussia had followed since 1795, and the Foreign Minister, Haugwitz, who had recommended bolder measures, withdrew for a time from the Court. [108] Baron Hardenberg, who had already acted as his deputy, stepped into his place. Hardenberg, the negotiator of the peace of Basle, had for the last ten years advocated a system of neutrality. A politician quick to grasp new social and political ideas, he was without that insight into the real forces at work in Europe which, in spite of errors in detail, made the political aims of Pitt, and of many far inferior men, substantially just and correct. So late as the end of the year 1804, Hardenberg not only failed to recognise the dangers to which Prussia was exposed from Napoleon's ambition, but conceived it to be still possible for Prussia to avert war between France and the Allied Powers by maintaining a good understanding with all parties alike. Hardenberg's neutrality excited the wrath of the Russian Cabinet. While Metternich, the Austrian ambassador at Berlin, cautiously felt his way, the Czar proposed in the last resort to force Prussia to take up arms. A few months more passed; and, when hostilities were on the point of breaking out, Hanover was definitely offered to Prussia by Napoleon as the price of an alliance. Hardenberg, still believing that it lay within the power of Prussia, by means of a French alliance, both to curb Napoleon and to prevent a European war, urged