Russia sent hundreds of drones toward Ukraine overnight into Wednesday, with four key regions coming under heavy attack and President Volodymyr Zelensky’s hometown facing “massive” bombardment, officials said.

A Ukrainian soldier told BI that the thermonaric warheads have gotten bigger, while a first responder said Russia is using them more frequently.

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

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.

That included a Monday joint statement from Republican Sen. Lindsey Graham and Democratic Sen. Richard Blumenthal calling Trump’s threat of ramped-up economic penalties if Russia doesn’t cut a peace deal in next 50 days “a real executive hammer to drive the parties to the negotiating table.”