The ultimate aim of most German nationalists was the gathering of all Germans under one state, although most accepted that the German portions of Switzerland would remain in Switzerland. Two ideas of national unity eventually came to the fore – one including and one excluding Austria. There are many interpretations of Otto von Bismarck's behaviour before the Austrian-Prussian war, which concentrate mainly on the fact that he had a master plan that resulted in this war, the North German Confederation and the unification of Germany. Bismarck maintained that he orchestrated the conflict in order to bring about the North German Confederation, the Franco-Prussian War and the eventual unification of Germany. On 22 February 1866, Count Karolyi, Austrian ambassador in Berlin, sent a dispatch to the Minister of Foreign Affairs, Count Alexander Mensdorff-Pouilly. He explained to him that Prussian public opinion had become extremely sensitive about the Duchies issue and that he had no doubt that "this artificial exaggeration of the danger by public opinion formed an essential part of the calculations and actions of Count Bismarck [who considered] the annexation of the Duchies ... a matter of life and death for his political existence [and wished] to make it appear such for Prussia too." Possible evidence can be found in Bismarck's orchestration of the Austrian alliance during the Second Schleswig War against Denmark, which can be seen as his diplomatic "masterstroke". Taylor also believes that the alliance was a "test for Austria rather than a trap" and that the goal was not war with Austria, contradicting what Bismarck later gave in his memoirs as his main reason for establishing the alliance. It was in the Prussian interest to gain an alliance with Austria to defeat Denmark and settle the issue of the duchies of Schleswig and Holstein. The alliance can be regarded as an aid to Prussian expansion, rather than a provocation of war against Austria. Many historians believe that Bismarck was simply a Prussian expansionist, rather than a German nationalist, who sought the unification of Germany. It was at the Gastein Convention that the Austrian alliance was set up to lure Austria into war. The timing of the Prusso-Italian alliance of 8 April 1866 was perfect, because all other European powers were either bound by alliances that forbade them from entering the conflict, or had domestic problems that had priority. Britain had no stake economically or politically in war between Prussia and Austria. Russia was unlikely to enter on the side of Austria, due to ill will over Austrian support of the anti-Russian alliance during the Crimean War and Prussia had stood by Russia during the January Uprising in Poland, signing the Alvensleben Convention of February 1863 with Russia, whereas Austria had not.