CALL OF DUTY BALCK OPPS CORDIS DIE MISSION TEN

It seems like you're referencing another part of the storyline of Call of Duty: Black Ops. Cordis Die is a mission in the game, and it's a significant point in the story.
To clarify, Mission Ten in Call of Duty: Black Ops is indeed Cordis Die. In this mission, the player controls Alex Mason as he infiltrates a Soviet base in Cuba. Unfortunately, this mission marks the death of Dr. Daniel Clarke, a key character in the game.
Would you like to know more about the storyline of Call of Duty: Black Ops, specifically about the events leading up to Dr. Clarke's death or the aftermath of this mission?