The Crimean Bridge in Kerch was attacked again early Monday morning of July 17. Several sections of the structure were destroyed, marking the latest victory for Ukraine’s revamped counteroffensive strategy.

When Ukraine first launched its summer counteroffensive in June, it quickly lost an estimated 20% of its Western-supplied armored vehicles. Some losses were expected, but not in such high numbers.

Russia had months to prepare its defensive positions. In some areas along the frontlines, Russia’s defenses are miles deep. Minefields pose the biggest danger, and without proper air support, the Ukrainians can’t clear them. The onslaught of Russian artillery keeps what few mine-clearing vehicles Ukraine has mostly at bay.