Man, that sucks.
To be fair, making it to 88 is a damn good run - but it still sucks. I always loved watching this man work - and not just because he was Kahn, though that's certainly part of it. Don't ask me why, but the guy always struck me as a class act, along with being a very gifted actor. I'm glad he had a role as good as Kahn in his career, one of the most memorable film villains of all time.
I don't know what else to say, so let me just shout "KKKKKAAAAAHHHHHNNNNN!!!!!" like every other nerd on the internet and then have a moment of silence.