The Clone Wars reshaped the entire Star Wars galaxy, with Count Dooku at the center of the entire multi-year conflict. As Darth Tyranus, Dooku served as Darth Sidious’ most essential agent. However, it's worth exploring what Sidious' apprentice did and didn't know about his master's full "Grand Plan".
Despite serving as the public leader of the Separatist movement, Dooku did much to advance both sides of the war on Palpatine's behalf . That said , a brand-new Star Wars story has created confusion as to the full extent of Dooku's knowledge of what was actually going on during the Clone Wars he helped orchestrate.
Count Dooku Was Instrumental In Starting The Clone Wars For Palpatine
Christopher Lee smiling slightly as Count Dooku in Star Wars: Episode II - Attack of the Clo

Screen Rant

Cowboy State Daily
FACTS.NET Culture
The Daily Beast
Wheeling Intelligencer
Raw Story