Russia launched a barrage of drones and ballistic missiles across broad swaths of Ukraine early Friday, killing at least three people and injuring dozens of others, days after Kyiv launched a daring raid on Moscow’s fleet of strategic bombers.

Ukraine said its “Operation Spiderweb” attacked Russian warplanes worth hundreds of millions of dollars, utilizing drones that each cost under $1,000 and were launched from wooden containers carried on trucks.

Ukraine unleashed more than a hundred drones smuggled deep into Russia in what it called its most damaging attack yet.