She shook her head sadly. ‘Then there will be war. Always war, until you conquer all, or you are destroyed, and France falls with you.’

‘If that is what God wills.’

‘God? Since when did you acknowledge His authority?’

‘Since it became good politics to.’

‘And if God wants peace?’

‘Then He will bless my cause and abandon all those who oppose me.’

Another sheet of lightning illuminated the Paris skies and burst into the bedchamber, painting their exposed flesh deathly white for an instant.There was a pause of a few seconds before the thunder cracked the heavens and then rumbled away. Napoleon spoke again. ‘I think the storm is passing.’

Josephine shook her head. ‘The worst is yet to come.’

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?’

‘Sire, war with Prussia would not serve the interests of France. Our true enemy is Russia. She looms across Europe from the icy wastes of the north to the Black Sea in the south. Her lands are vast, and her people countless. The Tsar’s inner circle have ambitions to spread the influence of Russia into Poland towards Prussia, and into the Balkans, the Ottoman empire and even across the mountains that border India. All the while the powers of central Europe are fighting each other Russia is biding her time, and waiting for the opportunity to snap up the lands that border her frontiers. You cannot guarantee the predominance of France while Russia remains undefeated, sire.’

‘And how would you propose to defeat Russia?’ asked Berthier. ‘To reach Moscow would take a march three times as long as between Paris and Berlin, across trackless lands that are baking in summer and as cold as hell in winter. No hostile army could conquer such a vast country. It is unthinkable.’

‘Nothing is unthinkable, Berthier,’ Napoleon cut in. ‘But I agree. At present, we are not ready to march on Moscow.’

‘I doubt that we will ever be ready to undertake such a campaign, sire.’>

‘We shall see.’

‘In any case, sire,’ Talleyrand continued, ‘there is no need to wage war on Russia, provided we can secure alliances with the other European powers against the Tsar. Given our current difficulties with Prussia the obvious move would seem to be repairing our relations with Austria.’

‘Austria?’ Berthier raised his eyebrows. ‘But we were at war with them only eight months ago.’

‘Precisely.A large dose of magnanimity on our part, at present, would go a long way towards securing their gratitude. And once we have that, we can cultivate Austria on our side of the balance of power.’

Napoleon suddenly laughed. ‘You are a schemer to the very core of your soul,Talleyrand.You talk of a balance of power.We do not need to concern ourselves with such things. One either has power or one does not.That is all.’

‘Surely, sire, power consists in getting others to do what one wishes them to do. If that is achieved bloodlessly, then it has to be the optimum result.’

Napoleon wagged a finger at his foreign minister. ‘No! It is not enough to trick them into doing what you want.They have to be aware that they do it because it is your will.That is the true meaning of power, my friend.’

Talleyrand stared expressionlessly at the Emperor for a moment, and then bowed his head a fraction as he responded, ‘If you say so, sire.’

‘I do. Now then, gentlemen, enough philosophy. We must concentrate our thoughts on Prussia. Let us assume for the present that they intend to wage war on us. If that is the case then what chance of victory do we have?’ Napoleon turned to Berthier. ‘You have assessed the intelligence reports?’

‘Of course, sire.’ Berthier reached for his notebook and flipped to the right page. He cleared his throat and began to read. ‘King Frederick William has over a hundred and seventy-five thousand men available to him at present. If he mobilises, then another seventy-five thousand could be under arms within ten weeks. That said, we know that the Prussian army has inherent weaknesses. It marches slowly and there is hardly a general under sixty years of age. The only officer with any outstanding ability is Prince Louis. As for the rest, they still conceive of war as it was thirty years ago.’

Napoleon smiled.‘That is why I shall defeat them.What of our own forces?’

Berthier ran his finger across on to the facing page. ‘A hundred and sixty thousand infantry are available in southern Germany for the campaign, plus another thirty thousand cavalry.’ Berthier glanced up. ‘The cavalry are in particularly fine form, sire. Murat helped himself to the best of the Austrian horses after Austerlitz.We have the finest cavalry in Europe now. Like the rest of the army, their officers report that the men’s morale is high. I’d say that the Grand Army is as ready for war as it has ever been.’