That night, the air in the capital was hot and humid and those who met in the Emperor’s private office wore only shirts, save Talleyrand, who refused to make any concession to climate and still wore his coat and cravat. Napoleon sat at the head of the table, with Berthier and Fouché to his left, and Talleyrand to his right. The meeting was lit by the glow of candelabras suspended from the ceiling and the heat of the little flames only added to the stifling atmosphere. Napoleon finished reading the report that his foreign minister had prepared for him, and slapped it down on the table.

‘It seems that you do not think it wise for France to risk another war at the moment?’

Talleyrand nodded. ‘Indeed, sire. We would risk being isolated and fighting another war against a coalition of enemies.’

Berthier patted a handkerchief against his temple. ‘I thought it was only Prussia that constituted a threat.’

‘No,’ Talleyrand replied flatly. ‘My sources in Moscow tell me that even though the Tsar was overawed by our victory at Austerlitz he is still an implacable enemy of the Emperor. If Prussia goes to war, then the Tsar will pledge his support to Frederick William. Worse still, since we defeated Austria and imposed harsh terms on them, there has been no shortage of resentment in Vienna and the danger is that the war party may yet sway the opinion of Emperor Francis towards intervention.’ Talleyrand paused a moment and then continued, addressing Napoleon directly. ‘I am sure that your army could defeat Prussia on its own, sire. But could it prevail against the armies of three nations? Four, if we count Britain.’

Napoleon pursed his lips. It was true that a victory against such odds was unlikely. Worse still, the last campaign had cost him the lives of many fine men who would be difficult to replace. The fresh drafts of conscripts that had filled out the ranks of the Grand Army were younger than ever and lacked experience of war. And yet his enemies, who had suffered so many defeats, still seemed able and willing to raise fresh armies to oppose him. In the end they must be defeated once and for all, before they bled France dry. He looked up at his foreign minister.

‘What would you advise me to do,Talleyrand?’