In the context of Open Skies Treaty, an observation flight was conducted over the Russian Federation from 29 July to 2 August 2013.
The inspection was made by a multinational team of inspectors from Greece, Germany and Italy. Greece , which was the head of the team, participated with seven inspectors and a Hellenic Air Force C-130 aircraft.
Open Skies Treaty was signed in Helsinki, on 24 March 1992, during OSCE Meeting. Initially, 27 states were the signatories, namely NATO memeber-states and states of the former Warsaw Pact, and currently Open Skies Treaty has 34 state-parties. The Treaty entered into force on January 1, 2002, as a tool of building Confidence Measures, aiming at the promotion of transparency of military activities (transatlantic), ranging from Vancouver to Vladivostok, through aerial surveillance.