Ukraine formally told the International Civil Aviation Organization that Russian airspace is not safe for civil flights because of intensified military activity and a sky filling with long-range drones. Foreign Minister Andrii Sybiha made the notice public on 2 September. President Volodymyr Zelenskyy had already warned airlines, insurers and anyone still using Moscow and St Petersburg airports that the safe days over Russia were over. He said Ukraine does not target civil aircraft. He also said drones will be in those skies at a scale that has to be taken into account. Infrastructure minister Mykola Kalashnyk wrote to ICAO Council president Juan Carlos Salazar asking the agency to encourage members toward a full prohibition on civil operations in Russian airspace. ICAO answered the same day without naming a country. It told member states to protect civilian aircraft from conflict-zone risk and listed the technologies now in the way long-range weapons, unmanned aircraft, GNSS interference and advanced air defences. The risk of being targeted or caught in crossfire, it said, is increasing. Moscow promised to keep civil aviation moving. Putin called Zelenskyy’s remarks state terrorism. Sheremetyevo and Vnukovo still posted scores of delays and dozens of cancellations. Pegasus cancelled some Russia flights for technical and operational reasons. European and American carriers have stayed out since 2022. Chinese, Turkish and Gulf airlines have not. The notice was aimed at them.
This is a governance test, not a battlefield dispatch. Civil aviation runs on a thin stack of trust. The state that owns the airspace is supposed to warn. NOTAMs are supposed to be current. Insurers price war risk off those warnings and off the maps sold by firms such as Osprey. Airlines then choose whether a corridor is still a corridor. ICAO can convene, issue circulars and update manuals on military activity and conflict-zone risk. It cannot close another country’s FIR. Article 3 bis of the Chicago Convention forbids weapons against civil aircraft. It does not give Montreal a switch that turns off Moscow’s airspace when two members disagree about who created the danger. Ukraine says Russia has ignored threats that have already produced incidents. Russia says the sky remains open. The airline in the middle is left with a letter from Kyiv, a generic ICAO statement, a Russian assurance and a hull-war policy that may or may not pay if a drone and an airliner occupy the same altitude by mistake. That is the red-line problem. After MH17, after PS752, after the 2024 Azerbaijan Airlines diversion that killed 38 people on the way to Grozny, the industry still has no automatic trigger that converts a swarm of uncrewed systems into a binding no-fly. A NOTAM can say fuel is short at Nadi. It is much harder for a NOTAM to say a sovereign sky is now a weapons range when the sovereign denies it. ICAO is rewriting guidance. Until states accept that drones have made 'safe airspace' a contested legal claim rather than a weather product, insurers and operations rooms will keep doing what they did this week reading two opposing notices and deciding, flight by flight, whether the cheaper routing is still survivable.