The Israeli army is expanding its use of mercenaries, criminal gangs and drug dealers to commit “war crimes” on Israel’s behalf in Gaza, an investigation by the Israeli daily newspaper Haaretz has revealed.

Based on testimony from Israeli soldiers, UN reports and satellite imagery, the investigation found that increasingly well-armed collaborator militias have expelled Palestinians from their homes and carried out operations across Gaza.

Israel has trained at least five militia groups, and potentially a sixth, operating from heavily fortified bases inside Israeli-occupied areas of the enclave.

One Israeli soldier described how the state, army and Shin Bet intelligence service send armed and “trained militias to commit war crimes, and I'm the one who has to protect them during their operations so they don't get hurt”.

The Israeli army has itself committed war crimes across Gaza.