Picture this:
According to a UPI press report, this is what Oleg Gordievsky believes.
"His belief is that the water from the kettle was only lukewarm and that the polonium-210 was added, which heated the drink through radiation so he had a hot cup of tea. The poison would have showed up in a cold drink,"
Right (sarcasm) I can just envision former Russian spy Alexander Litvinenko taking and drinking a bubbling cup of tea from a total stranger.
Link to UPI report: http://www.upi.com/NewsTrack/view.php?StoryID=20070120-082114-2587r
Perhaps the killer was a trusted confidante of Litvinenko. His last mistake.
"Here's a nice cup of tea, Comrade Livenko, courtesy of Comrade Putin."
As any true Brit will tell you 'always bring the pot to the kettle'.