title: Attack on the Open Skies Treaty
abstract: President Donald Trump has announced that the United States will leave the multilateral Open Skies Treaty (OST). Russia could soon follow. The Trump administration would thus continue the US withdrawal from cooperative security and destroy another piece of the arms control architecture. Its continued dismantling, a new arms race, and the return of armed conflict and nuclear warfare scenarios threaten Europe's security and strategic stability. The OST permits cooperative observation flights over 
journal: Social Science Open Access Repository (GESIS – Leibniz Institute for the Social Sciences)