Following the Alex Litivenko murder, it appears that we never left the Cold War, with allegations of MI6 and KGB involvement in a murder, claim and counter-claim, with intrigue and mystery. All the stuff of a good Le Carré novel.
I'd be surprised if someone wasn't already working on a screenplay or novelization. A thought that's depressing as it follows an actual murder.
(Update: Now there's talk of missiles. Lovely - Murk)