Ukraine has launched devastating set of revenge drone strikes on the Russian missile brigades responsible for the Palm Sunday attack on Sumy that killed 35 civilians. The retaliatory strikes targeted the 448th and 112th missile brigades that carried out the deadly assault which also wounded 119 Ukrainian civilians.

Ukraine’s military has increasingly relied on this strategy, especially as it tries to respond to deadly attacks on its cities. One such attack, which recently caught the world’s attention, involved a drone strike far inside Russia.