“To denounce the Treaty on Open Skies signed in Helsinki on March 24, 1992,” the document says.
In May, President of Russia Vladimir Putin has submitted to the State Duma the bill on the denunciation by the Russian Federation of the Treaty on Open Skies.
In May 2020, then U.S. President Donald Trump made a decision to withdraw the U.S. from the Treaty on Open Skies. The reason is the violation of the treaty by Russia. Particularly, the issue is about the ban of observation flights over Moscow, Chechnia, and Kaliningrad Oblast.
The Treaty on Open Skies was signed in March 1992. It allows 34 states-members of the OSCE (including Ukraine, Russia, and the U.S.) to hold unarmed observation flights over the territories of each other.