Should the allies offer France its so-called ‘natural frontiers’ – in other words the border marked out by the Rhine, the Alps and the Pyrenees and envisaged in the Teplitz treaties? Or should they seek to reduce France to its ‘historic’ borders, meaning the territory ruled by the French king in 1792? This was not the same question as whether the allies should negotiate with Napoleon or try to overthrow him, but the issues were linked. It was perhaps conceivable that Napoleon would tolerate a peace based on ‘natural borders’, but only a great optimist could believe that he would see a settlement linked to the old royal frontiers as anything other than a temporary truce. The allies knew, however, that it was neither in their power nor in their interests to impose a regime on the French. Their armies could not occupy France for ever. Sooner rather than later they needed a French regime with sufficient legitimacy to accept a peace settlement and survive in power, once initial war-weariness had faded in French society. There was plenty of room for honest disagreement among the allies about what kind of French regime would best fit this bill. The one obvious point, though, was that the more a regime was seen to be imposed by the allies, the harder its task would be to win acceptance among the French people.
These questions were complicated and without clear answers. Suspicion and arguments in the allied camp were made far worse, however, by clashes of interest over the final peace settlement for Europe as a whole. Directly or indirectly, Napoleon had ruled over most of Poland, Germany, Italy and the Low Countries. The fate of all of these territories now had to be decided, and this had enormous implications for the power, status and security of all the allied states. Above all there was Poland, or more specifically the Duchy of Warsaw. The whole Duchy was former Prussian or Austrian territory. Alexander wanted it for Russia. The balance of power in east-central Europe between the three major continental allies was widely seen as turning on this issue. Disagreements about how Poland should be partitioned had broken up the First Coalition against Revolutionary France. They were the likeliest source of disintegration for the present coalition too. Nor could the Polish issue be kept separate from the question of how to deal with Napoleon and France. Faced with Russo-Prussian solidarity, Austria looked to France as a possible ally. If too weakened or humiliated by the peace, the French could not fulfil this role. On the other hand, a France indebted to Vienna for a moderate peace settlement and ruled by Francis II’s son-in-law, Napoleon, might be a useful check to Russian power.2
Though some tensions existed between all the allied powers, the most important conflict was between Austria and Russia. One key area of rivalry was the Balkans. In 1808–12 the Russians seemed on the verge of conquering all of present-day Romania and turning Serbia into their client state, thereby increasing their prestige and leverage throughout the Balkans. Only the threat of Napoleon’s invasion had persuaded Petersburg to draw back, but no one in Vienna could be naive enough to believe that this was the end of the story. More broadly, the Austrians feared growing Russian power, of which 1812 had been a reminder. Her geographical near-invulnerability, the quality of her army and the scale of her resources all made Russia an empire to be feared.
Nevertheless, one must not exaggerate: in 1814 Austria was not yet greatly inferior to Russia in power. We are still far from the era of 1914, by which time Russia had been strengthened by huge population growth and the Austrian army weakened by the conflicts between the Habsburg Empire’s many nationalities. Even on their own in 1814 the Austrians could hope to put up a stout defence against Russia. Allied to Prussia they had every chance of defeating it. In many ways the main problem for Metternich in 1814 was Russo-Prussian solidarity, which increased Russian confidence and gave Russia a secure gateway into central Europe. The Russo-Prussian alliance threatened to isolate Austria and cut across Metternich’s desire for a Germanic bloc which would largely exclude French or Russian influence from central Europe. Within that bloc Austrian resources and Habsburg history would give Vienna a natural pre-eminence. Meanwhile Metternich envisaged that peace and equilibrium in Europe as a whole would be protected by a balance of power between France and Russia.3
Austrian perspectives had some support within the Prussian government. When the Treaty of Kalicz had been negotiated between Russia and Prussia in February 1813 there had been much tension over the fate of Prussia’s former territories in the Duchy of Warsaw. The Prussian king’s closest military adviser, Major-General Karl von dem Knesebeck, shared the Austrian high command’s fears about attempting to march on Paris and unseat Napoleon.4