League of Dragons - Naomi Novik

League of Dragons is the ninth novel in the Temeraire series.

Temeraire and Captain Laurence are still working to defeat Napoleon, even though they're his prisoners. Napoleon has tried to lure all the dragons in the world to his side with promises that he can't keep. It's up to Temeraire to convince them of his lies. Can they finally defeat Napoleon or will he finally be victorious. Very highly recommended.