MOSCOW (Sputnik) — According to him, in the course of the observation mission, Croatian and Slovenian specialists on board the aircraft will monitor compliance with the agreed parameters for the flight and the use of observation equipment.
"Observation flights will be performed on May 16-21 from Open Sky air fields in Zagreb [Croatia] and Ljubljana [Slovenia] at a maximum distance of 1,300 kilometers [some 808 miles] and 500 kilometers, respectively," Sergei Ryzhkov said.
The Treaty on Open Skies was signed in March 1992 and became one of the major confidence-building measures in Europe after the Cold War. It entered into force on January 1, 2002, and currently has 34 states parties, including Russia and most NATO members.