Kyiv was burning as Dr. Borys Todurov sped through the city in an ambulance, undeterred by the deep thuds of explosions and the terrifying sounds of Russian drones flying overhead.

Russia pounded Ukraine with hundreds of drones and missiles overnight and Saturday as part of a stepped-up bombing campaign that killed at least six people and wounded dozens, officials said.

Russia unleashed its fourth major attack on Ukraine this month, killing at least 13 civilians Saturday as it rained hundreds of drones and missiles down on the country’s western cities — once considered safe from the onslaught.

Officials say a Russian drone barrage has targeted the center of Kharkiv, injuring nine people and damaging a maternity hospital in Ukraine’s second-largest city.

A new book alleges that President Donald Trump told donors he threatened Russian President Vladimir Putin with bombing Moscow if Russia invaded Ukraine.

"As a result of the explosion, a satellite communication hardware station—intended by Russian military leadership to coordinate occupying forces—was also destroyed," Ukraine's military intelligence said.

KYIV, Ukraine — Russia fired more than 100 drones at civilian areas of Ukraine overnight, authorities said Monday, as the Kremlin dismissed the country’s transport chief after a weekend of travel chaos when Russian airports grounded hundreds of flights due to the threat of Ukrainian drone attacks.

President Donald Trump said he plans to make a "major statement" on Russia on Monday amid Vladimir Putin's continued attacks on Ukraine.