My wife worked on projects that included references to Open Skies.
One of my trips had me nervous as Fukushima had the flights taking a wider Northern route and "say, we're over Russia" to my fellow traveler. Open Skies is important.
The website is based in S. Asia.
http://www.thestatesman.com/world/unarmed-russian-air-force-jet-flies-over-washington-1502351147.html
Quite interesting.

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