As Ukraine chips away at Russian supply lines and oil infrastructure, Western analysts say the Kremlin’s hopes of a rapid push towards Kramatorsk are slipping into a drawn-out war that could drag on for several more years.

The Russian army captured 14 square kilometres of Ukrainian territory in May. DeepState, a Ukrainian group of military analysts, reported that this is the lowest monthly rate of…

This is despite the group's public map showing a Russian advance of 14 square kilometers (about 5.4 square miles) in May, due to the delay in publicly acknowledging advances by…