It was ever Napoleon's habit to return blow with blow; and he now instructed Talleyrand to reply that in the D'Enghien affair he had acted solely on the defensive, and that Russia's complaint "led him to ask if, at the time when England was compassing the assassination of Paul I., the authors of the plot had been known to be one league beyond the [Russian] frontiers, every effort would not have been made to have them seized ?" Never has a poisoned dart been more deftly sped at the weak spot of an enemy's armour.

The Czar, ever haunted by the thought of his complicity in a parricidal plot, was deeply wounded by this malicious taunt, and all the more so because, as the death of Paul had been officially ascribed to a fit, the insult could not be flung back.[3] The only reply was to break off all diplomatic relations with Napoleon; and this took place in the summer of 1804.[4] Yet war was not to break out for more than a year.

This delay was due to several causes.

Austria could not be moved from her posture of timid neutrality.

In fact, Francis II.