The attack used almost 500 drones and missiles, breaking a record set just days earlier, as Russia tries to overwhelm Ukraine’s air defenses, which shot down most of the weapons.

The warring sides also exchanged prisoners in one of the few results of talks last week, and Russia reported new attacks on the front line.

While this operation doesn't change the immediate situation on the ground, it will leave a lasting impact on Russia and, very possibly, the future of warfare.