KYIV, Ukraine (AFP) — United States President Donald Trump said Russia just wanted to “keep killing people” and hinted at sanctions after Moscow launched its largest ever drone and missile attack on Ukraine in the three-year-old war.

Trump said Friday he was “very unhappy” about his telephone call with Russian leader Vladimir Putin, saying: “He wants to go all the way, just keep killing people, it’s no good.”

The US president said he and Putin talked about sanctions “a lot,” adding: “He understands that it may be coming.”

Hours-long Russian bombardments sent Ukrainians scurrying for shelters across the country and came after the call between Trump and Putin, which ended without a breakthrough.

Agence France-Presse journalists in Kyiv heard drones buzzing over the capital and explosions ringing out throughout the night. Ukraine’s President Zelensky also spoke to Trump Friday and said they agreed to work on bolstering Kyiv’s defenses.

“We spoke about opportunities in air defense and agreed that we will work together to strengthen protection of our skies,” Zelensky said on social media after the call.