This post is also available in:
English
Español (Spanish)
Italiano (Italian)
Deutsch (German)
فارسی (Persian)
Português (Portuguese (Brazil))
Русский (Russian)
Français (French)
Short answer
It has been stated in interrogation of captured Hamas operatives and shown through first hand evidence from ground troops research that Hamas hides under and utilizes spaces in hospitals for their military needs, which is a war-crime.