(Reuters) -At least three children were among 27 people wounded as a result of a Russian drone attack on Ukraine's second-largest city of Kharkiv overnight that damaged apartments and a kindergarten,

Russia launched 550 drones and missiles across Ukraine overnight in the largest aerial assault since the war began. The capital Kyiv was the primary target.

With their dense mesh, the nets can tangle drone propellers. It’s a simple but effective countermeasure that reflects how low-tech means can blunt high-tech weapons in the war.