The reason the territory was not well defended in the first place was because it has very little military value apart from being a corridor to reach the nuclear power plant.
This objective has failed completely.
The Ukrainian military has rotated out most of the hardened fighters who led the offensive and replaced them with poorly trained, inexperienced troops sent into Russia to act as cannon fodder.
After they arrived, the Ukraine's "motivational battalions" burned the bridges behind them so the troops have no option but to hold the line to the bitter end so the Ukraine does not have to withdraw and admit it's offensive has failed.
The diversion of resources created by this ill advised offensive has resulted in the collapse of resistance of the Ukrainian forces in key areas and rapid Russian advances into Ukraine.
The DM is where discerning people the world over learn what MI6 wants them to know.
Britain has no freedom of the press. Just an illusion of it. All Brit press knuckles under to MI6 or goes to prison. Most of the US Press knuckles under the CIA/FBI/WEF, not because they have to, but because they want to.