newstodate.aero
Oct 06, 2020 (newstodate): Located only 90 meters from the Ukrainian-Slovak international border, Ukraine's Uzhhorod International Airport with a 2,038 m runway is utterly dependent on agreement between the two countries.
And on September 24, 2020, the two countries' transport ministers signed a bilateral intergovernmental agreement allowing a Ukrainian AIRNAV company to provide ATC services supporting the airport's operations.
The agreement is complicated by the fact that unlike Ukraine, Slovakia is a NATO member, and the Ukrainian-Slovak border is the external border of NATO, raising issues of security and defense.