He shot himself and had one of his right hand men pour gasoline on his body to be burned but there wasn't enough to burn him completely. Everyone else who was in the room with him before he did that had to take a cyanide capsule.
All of what they said... OR!!! He faked his death in the bunker and secretly fled to South America to live out his days in incognito peace with some of his closest advisers. O_O But probably what everyone else said.