Re: Why assume they are located in GMT + 4
Plus I doubt Russia needs to bug former satellite countries embassies; They probably still have direct lines into the governments of the former Soviet republics.
Russia is too obvious, so it must be the CIA operating from Diego Garcia (UTC+6). Unless that's too obvious and it's the Russians trying to discredit the CIA. But if I can think of that, it must be too simple so..oh, I give up.