Russian officials and commentators have shown little indication that Moscow is about to change course under new pressure.

Russia's Defense Ministry, meanwhile, said its forces downed at least 70 Ukrainian drones overnight into Tuesday morning. Among the areas targeted was the southwestern Voronezh region, which borders northeastern Ukraine. At least 24 people were injured there, Gov. Aleksandr Gusev said on Telegram.

President Donald Trump’s ultimatum to Russia to accept a peace deal in Ukraine within 50 days or face bruising sanctions has given the Kremlin extra time to pursue its summer offensive.