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Israel, Hamas & International Law: A Guide

In response to Hamas’ brutal invasion of Israel on October 7, 2023, which included massacres of Israeli civilians and the kidnapping of over 200 Israelis into Gaza, the Israeli military has been conducting daily targeted…

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In response to Hamas’ brutal invasion of Israel on October 7, 2023, which included massacres of Israeli civilians and the kidnapping of over 200 Israelis into Gaza, the Israeli military has been conducting daily targeted strikes within Gaza against Hamas terrorists and infrastructure.

Since the start of Israel’s campaign against Hamas, anti-Israel figures have accused the IDF of “war crimes.” Numerous mainstream media organizations have also published pieces questioning whether all of Israel’s actions are justified under international law.

With headlines such as “Experts say Hamas and Israel are breaking international law, but what does that mean?” (France24, October 21), “Are Israel’s military tactics abiding by the laws of war?” (PBS, October 23), and “Is Israel acting within the laws of war?” (The Economist, October 14), it is important to understand what the rules of war are and how the Israeli military’s actions abide by them.

Four points of international law that have garnered the most focus in recent analyses are:

  • Distinction (military v civilian targets)
  • Proportionality
  • Efforts to avoid civilian casualties
  • Laws of siege warfare

The Principle of Distinction: Military v Civilian Targets

One of the major tenets of the rules of war is the principle of distinction: All parties to a conflict must distinguish between civilians and combatants by separating military infrastructure from civilian areas, wearing clothing that distinguishes combatants, and ensuring that civilians are not deliberately targeted in attacks.

However, as part of its terrorist modus operandi, Hamas purposefully embeds itself within the civilian population of Gaza, digging tunnels beneath homes, firing rockets from within civilian areas, and using civilian infrastructure (such as hospitals, mosques, and schools) as munitions depots and bases for its terrorists.

How is Israel supposed to retaliate against Hamas when the Palestinian terror group does not observe the principle of distinction?

Per international law, once a civilian object is used for military purposes, it loses its protected status and becomes a legitimate military target.

According to David French, a columnist for The New York Times and former judge-advocate in the American military, the civilian object used by Hamas not only becomes a legal target but Hamas is culpable for any damage done to the civilian object as well as any civilian loss of life during the attack.

The Principle of Proportionality: Is Israel’s Response Disproportionate?

With over 1,400 Israelis killed during the Hamas atrocities and subsequent rocket attacks, and over 6,000 Palestinians allegedly killed in Israeli retaliatory strikes according to the Hamas-run Ministry of Health, some commentators and activists have claimed that Israel’s response is disproportionate.

However, this stems from a fundamental misunderstanding of what proportionality means within international law.

In brief, the principle of proportionality dictates that civilian casualties (both killed and injured) cannot be excessive in relation to the military advantage that would be gained directly from an attack.

For every strike that Israel undertakes against Hamas, it calculates the potential harm to civilians against the weight of the military advantage to be gained from the attack and determines whether the attack is proportionate.

Even when Hamas is cynically using Palestinian civilians as unwitting human shields, those civilians are included in the IDF’s assessment of the attack’s proportionality.

According to Pnina Sharvit Baruch, the former head of the international law division of the IDF’s Military Advocate General (MAG), the concept of “military advantage” is also dependent on the circumstances of each war and the nature of the enemy.

Thus, in this war, due to the exceptional brutality of the Hamas attack, which proved the Palestinian terror group to be much more dangerous and impervious to the fate of civilians than previously thought, the military advantage may be given more weight than in other military operations that Israel has undertaken against Hamas.

As well, David French notes that proportionality also does not require the military to respond with the “same degree of force” that was used by the enemy. Thus, the Israeli response to Hamas rifle fire with fire from a tank or to Hamas rocket fire with a targeted airstrike is allowed under international law and is not considered to be a disproportionate response.

It should also be noted that according to Dr. Aurel Sari, an assistant professor of international law at the University of Exeter, the assessment of whether an attack was proportional can only be determined based on the intelligence that the military had on hand at the time of the attack and cannot be based on hindsight.

Israel’s Efforts to Avoid Civilian Casualties

At the same time that Israel is working to fulfill its stated goal of destroying Hamas, it is also seeking to limit innocent civilian casualties among the population of Gaza.

One of the main ways is by encouraging the inhabitants of northern Gaza, where the vast majority of Israeli strikes have been located and where a future ground incursion would likely take place, to evacuate to southern Gaza.

By doing this, Israel has fulfilled the legal requirement of taking “feasible precautions” to minimize harm to the civilian population.

While some human rights organizations have criticized Israel’s warning to the residents of northern Gaza and consider it to be tantamount to “forced displacement,” a variety of legal scholars have observed that Israel’s actions fall within the parameters of international law.

Michael Schmitt, a scholar of international law at the West Point Military Academy, deemed it “bewildering” that human rights organizations were not assisting with the evacuation of civilians and noted that, per the rules of the International Committee of the Red Cross (ICRC), it’s not considered to be “displacement” if it is necessary for the safety and security of civilians.

Similarly, Amichai Cohen, a professor of international law at Ono College in Israel, notes that Israel’s warning to Gazan civilians to evacuate the north was in line with the ICRC rules as the evacuation order did not threaten the civilians with the loss of protective status if they chose to stay (rather, that it would be safer to move to the south).

As Israel has also been evacuating its own citizens from areas adjacent to the Gaza and Lebanon borders, it is clear that Israel’s evacuation warning to Gaza’s civilians is for their own benefit, fulfills Israel’s responsibility to take feasible precautions to protect civilians, and is in line with international law.

The Siege of Gaza: Its Parameters Within International Law

Soon after the Hamas attack on October 7, Israeli Defense Minister Yoav Gallant declared a total siege of the Hamas-controlled Gaza Strip, cutting off all supplies of water, fuel, food, and medicine.

While Israel has allowed for the limited flow of water and aid convoys to the Strip since then, it is important to analyze the parameters for a siege within international law.

David French notes that the rules of siege warfare are a matter of dispute among legal scholars, which is why some have opposed Israel’s siege while others have defended it.

Since ancient times, a siege has been considered an accepted form of warfare. However, the question is, what are the besieging party’s (i.e. Israel’s) responsibilities to the non-combatants left within the besieged area (i.e. Gaza)?

Both the Fourth Geneva Convention and the later Additional Protocol call for both parties to reach an agreement on the evacuation of certain classes of vulnerable civilians as well as to endeavor to reach an agreement on the flow of humanitarian relief to besieged civilians.

However, per Article 23 of the Fourth Geneva Convention, the relief should only be granted if both parties are satisfied that it will not get into the hands of the enemy combatants.

Without these guarantees and without an agreement between the two warring parties, the law does not require the besieging party to allow for humanitarian relief to the besieged territory.

As British international law expert Natasha Hausdorff observed, the provision of relief to Gaza by Israel “isn’t viable during a military campaign where Hamas exploits these transfers, stealing supplies, and penetrating humanitarian organizations to mask its terror operations…”

Thus, while Israel has allowed for a limited amount of relief to arrive in Gaza, it is not obliged by international law (according to one school of legal thought) to do so as long as Hamas continues to exploit the humanitarian relief convoys and usurp the aid intended for Palestinian civilians for its own nefarious purposes.

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Photo Credits:

  • Chris McGrath via Getty Images
  • Michael Giladi via Flash90
  • Atia Mohammed via Flash90
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