The joint mission of Ukraine, USA and France in the framework of the international Treaty on open skies from 31 August to 4 September, will perform an observation flight over Russia in the French C-N. "in the period from 31 August to 4 September in the framework of the implementation of the international Treaty on open skies, a Joint mission of France, the USA and Ukraine will carry out observation flight over the territory of the Russian Federation on the French aircraft observations-N ", - said the head of the Russian national Centre for reducing nuclear threat Sergei Ryzhkov. according to his statement, in the process of flying the agreed route of the Russian Experts in the cabin of the aircraft observations will be kept under strict control of compliance with the agreed parameters of flight and use provided by the contract, observation equipment. "The aircraft observations-N refers to the type of aircraft that are not equipped with any weapons. The plane and installed the surveillance equipment (cameras) have passed an international examination, which was attended by Russian Experts, which eliminates the use of technical means, not provided for by the Treaty on open skies, " - said Ryzhkov. The Treaty on open skies was signed in 1992 and became one of the measures to strengthen confidence in the European Union after the cold war. It's been around since 2002 and allows the participating countries to openly collect information about military forces and activities of one another. The Contract includes the vast number of NATO countries, Russia, Belarus, Ukraine, Georgia, Bosnia and Herzegovina and neutral Sweden and Finland. Typically, the flights Russia and NATO countries are conducted on a reciprocal basis.