Ukrainian President Volodymyr Zelenskyy said he was sending a Ukrainian delegation to Istanbul for another face-to-face with Russian representatives.

Delegations from Russia and Ukraine are in Turkey for their second round of direct peace talks in just over two weeks.

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.