Open Skies Treaty Withdrawal: Unilateral Exit from 35-Nation Arms Control Agreement
The Open Skies Treaty allows its 35 signatories — including the United States, Russia, and most NATO and former Warsaw Pact nations — to conduct scheduled unarmed reconnaissance flights over each other's territory. The flights collect imagery that member states share, building collective military transparency. Trump administration officials argued Russia had violated the treaty by restricting U.S. flight paths over certain territories. European allies agreed Russia had compliance issues but argued the U.S. should address them within the treaty framework rather than withdraw, and warned that U.S. withdrawal would give Russia an excuse to exit entirely. Russia did subsequently withdraw from the treaty in January 2021, after Trump's withdrawal had set the precedent. The Biden administration reviewed but did not rejoin the treaty due to concerns about congressional opposition.