The Tornaco Ministry was in office from 26 September 1860 until 3 December 1867. It was reshuffled six times. The government of Victor de Tornaco saw several important developments in international politics, such as the dissolution of the German Confederation in 1866 after the Austro-Prussian war, and an attempt by Napoleon III to purchase Luxembourg off William III of the Netherlands, which was prevented by Otto von Bismarck. A solution to this crisis was found in London, and made official in the Second Treaty of London: the Prussian garrison had to withdraw, the fortress of Luxembourg was demolished and Luxembourg was declared neutral and independent.