🇧🇬🇺🇦 Zelensky: We have clarified all the data with the Bulgarian side. Our Naval Forces contacted our colleagues in Bulgaria, and it was established that this was a combined Russian attack using sea and air drones. I have instructed our Armed Forces, the Ministry of Defense of Ukraine, our intelligence, and all our services to cooperate as fully as possible with our partners so that they and we have more opportunities to defend ourselves.