"We can avert war between our nations. Just two of us. No politicians, no money changing hands. Just two soldiers speaking the truth." This section contains spoilers for Battlefield 3.
Amir Kaffarov stole and sold three nuclear devices from the Russian Government to rogue CIA informant Solomon. During the assault on his villa, Kaffarov was killed or incapacitated by Dimitri Mayakovsky, although his exact fate is never known. During the final interrogation scene, it is stated that Kaffarov had died. This was probably not during the events of Kaffarov, as Dima never states that he had killed Kaffarov while speaking to Blackburn and he even refers to him as though he is still alive.