‘Obstacle Belts From Hell:’ Retired General on Ukraine’s Slow Counteroffensive | WSJ

The recent turmoil in Russia in the wake of Wagner Group's mutiny led by Yevgeny Prigozhin could provide opportunity for Ukraine's battlefield troops in their counteroffensive, particularly near Bakhmut, Zaporizhzhia and Vuhledar, where the bulk of the fighting is happening.

But why has there been little progress for Ukrainian soldiers breaking through the front lines?