Russia launched another drone attack Monday night, making the two consecutive nights of attacks the largest drone assault against Ukraine yet, coming as peace talks between the nations stall. Russia launched hundreds of Geran drones and over a dozen missiles of various types at targets across Ukraine on Monday night,

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.

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.