"Putin's criminal war is getting closer to our borders," Polish Foreign Minister Radosław Sikorski said on Wednesday.

Despite the changes in warfare, Russian forces retain the ascendancy and are making slow but steady advances in the east and north of Ukraine. Russia has also caught up in UAV technology after falling behind early in the war, according to military analysts, and like its enemy is churning out drones domestically at a rate of millions a year.

Ukraine's Brave1 hopes all of its infantry will eventually carry its new anti-drone rifle rounds, designed to fire from NATO-issued rifles.

Ukraine war has become the most drone-intensive conflict yet – and Ukrainian commanders believe they are the only thing keeping Russian forces at bay, writes