STEVE INSKEEP, HOST: Ukraine launched a new wave of drone attacks on Russia overnight, with the majority targeting Moscow. Here's the sound as some of the strikes hit, as captured on Russian social media. (SOUNDBITE OF EXPLOSION) INSKEEP: You can hear the buzz of the drones, the blast, the car alarms. It amounted to one of the largest attacks on the Russian capital since the Kremlin ordered the invasion of Ukraine more than four years ago. NPR's Russia correspondent, Charles Maynes, is in Moscow.