Addressing the Use of Human Shields, section 3.1, page 7 https://dam.gcsp.ch/files/doc/SSA_Addressing-the-use-of-human-shield

The prohibition of human shields is complemented by Article 51(8) of the 1977 Additional Protocol I, which clarifies that any violation of the rules on the protection of civilians does “not release the Parties to the conflict from their legal obligations with respect to civilians”. Therefore, even if the enemy uses human shields, the attacker continues to be bound by the rules on distinction, proportionality and precaution. The presence of human shields may require additional efforts in terms of precautionary measures, including the suspension or abortion of the operation.

The problem is that Israel has not ratified Additional Protocol I of the Geneva Conventions.