Ukrainian President Volodymyr Zelenskyy: Today I signed a decree establishing June 11th as "Unmanned Systems Forces Day." We are fully committed to developing unmanned systems forces. The Unmanned Aerial Vehicle Forces (UMSF) of the Ukrainian Armed Forces, established just one year ago, has already caused nearly $40 billion in damage to Russian targets. Ukrainian drones are now capable of striking Russian military supply lines in temporarily occupied territories.