Following a successful phone call between the U.S. peace delegation and Ukrainian President Volodymyr Zelensky on Saturday, Russia launched another aerial attack on Ukraine, Ukrainian officials say.

Zelensky confirmed the Russian attack on X on Sunday, saying it was the latest series of strikes in a week that saw over 1,600 attack drones hit the nation. Zelensky’s confirmation came less than 24 hours after he said he was “grateful for a very focused, constructive discussion” with U.S. special envoy for peace Steve Witkoff and President Donald Trump‘s son-in-law Jared Kushner.