Russia Ukraine war, page-21536

Basic essentials to life are:

- food,
- air, and
- water.

How are they going to sustain 2,500 fighters (not including civilian) being stuck underground?

Unless there are secret facilities of food and water in these tunnels, they won't last more than a few weeks.

Perhaps that is strategy; to hold out until after the French election - as there are rumours of French Foreign Legionnaires serving within the Mariupol brigade.