Is the FBI getting carried away? Do they really believe that Moscow Centre has a bunch of sleepers ferreting out US secrets? Especially when most of the secrets can be read in The New York Times or The Washington Post?
And the whole paraphrenalia of the Le Carre cold war is being trotted out, including deadletter drops, brush passes and code names.
It's all so 1960s. Sooner or later, we will find that there is a sixth or seventh man, a British traitor, at the bottom of it.
I blame the BBC - the recent broadcasting of the Smiley novels must have given the Russians and the Americans silly ideas. (Perhaps they thought it was a news report?)