After a second round of direct peace talks in Istanbul on June 2, it seemed like Russia and Ukraine were even further from an agreement to end Russia’s war on Ukraine than they had been when they sat down for the talks.

Ukraine’s security service released footage Wednesday of its attack on Russian war planes at multiple airbases across the country. In the span of a few hours on Sunday, nearly a third of Moscow’s strategic bomber fleet was destroyed or damaged with cheaply made drones sneaked into Russian territory, according to Ukrainian officials.