1. If that happened, I think that Ukraine wouldn't bomb hospitals and civilian buildings no matter what kind of targets are there, for a few reasons, no matter what kind of targets are there, for a few reasons, main one being the morality of such actions
Hospitals can lose their protective status if the other side uses them for harmful purposes:
ART. 19. — The protection to which civilian hospitals are entitled
shall not cease unless they are used to commit, outside their
humanitarian duties, acts harmful to the enemy. Protection may,
however, cease only after due warning has been given, naming, in all
appropriate cases, a reasonable time limit, and after such warning
has remained unheeded.
The fact that sick or wounded members of the armed forces are
nursed in these hospitals, or the presence of small arms and
ammunition taken from such combatants and not yet handed to the
proper service, shall not be considered to be acts harmful to the
enemy.
shall not cease unless they are used to commit, outside their
humanitarian duties, acts harmful to the enemy. Protection may,
however, cease only after due warning has been given, naming, in all
appropriate cases, a reasonable time limit, and after such warning
has remained unheeded.
The fact that sick or wounded members of the armed forces are
nursed in these hospitals, or the presence of small arms and
ammunition taken from such combatants and not yet handed to the
proper service, shall not be considered to be acts harmful to the
enemy.
The protective status of hospitals is not absolute and can be removed and still be moral or at the very least operating within the restrictions of the Geneva convention. But why make up hypothetical war crimes? I've already seen Russian drone footage targeting a clearly marked ambulance in contravention to the Geneva convention.