The intensive use of drones by both Ukraine and Russia made it impossible to conduct offensive operations.

This was stated by the head of Ukrainian military intelligence, Kyrylo Budanov, in an interview with Le Monde.

Another factor hampering a counteroffensive is the density of minefields, which has not been seen since World War II.

"We know the solution for drones is electronic countermeasures. Specialized equipment is needed for mines," Budanov said.