Did an Israeli medical center raid violation the regulations of battle?

.THE guy in the wheelchair, pushed along by 3 companions, looks like any other person in the Ibn Sina healthcare facility in the West Bank. Thus carries out the woman in a headscarf obviously holding a child. Others, in scrubs, resemble medical workers.

Yet instants eventually they pull out rifles and kill 3 Palestinians. Within 10 mins they are actually gone. Israel claims it did away with three revolutionaries during the course of the bust on January 30th and also avoided a primary strike which was imminent.

However masquerading combatants as clinical personnel most likely breaks international law, which bans “perfidy”. What is actually that criminal offense?