Use of heavy explosive weapons in densely populated urban areas is inherently disproportionate

CLAIM:

STATUS:

Misleading

KEY COUNTERPOINTS:

The word “inherently” makes this claim legally false — IHL contains no categorical ban on heavy explosive weapons in urban areas. The governing framework is Customary IHL Rules 14 and 15: distinction, proportionality, and feasible precautions, applied attack by attack. No treaty, customary rule, or binding legal instrument designates heavy explosive weapons as automatically unlawful in populated areas regardless of circumstances. Israel’s 2022 statement on the EWIPA political declaration stated directly that the declaration “does not create any new legal obligations” and that “recognizing the lawfulness in principle of the use of explosive weapons in populated areas is important.” The ICRC’s own reports, which are the strongest source critics use, frame the issue as a humanitarian concern and a call to avoid such use — not as a statement that every such use is already illegal.
The ICRC’s position is not that every urban use of heavy explosive weapons violates IHL — it is that compliance is often very difficult. The ICRC President’s 2023 statement said: “when heavy explosive weapons are used in populated areas, compliance with international humanitarian law is often very difficult.” That is a statement about practical difficulty, not a legal ruling of automatic illegality. The ICRC calls on parties to avoid such use because of the significant likelihood of indiscriminate effects — not because the use is prohibited in every instance under existing law.
Legality turns on the specific strike, not the weapon category or the setting. The relevant factors are the weapon’s area effects, the density of civilians in the target area, the nature and military value of the objective, the anticipated military advantage, the expected incidental harm, and the precautions taken. A heavy explosive weapon used against a tunnel node in a partially evacuated area after warnings is a different legal question from the same weapon used against a residential block with no military function. Collapsing both into one categorical rule inverts how IHL actually works.
The EWIPA political declaration reflects political momentum, not binding law. The 2022 political declaration on explosive weapons in populated areas was signed by a number of states and calls for restricting use of such weapons in urban areas. It is not a treaty. It does not amend AP I. It does not create customary law. Using it as though it establishes a new binding legal standard overstates its legal status significantly.
Hamas’s deliberate embedding of military assets within civilian areas directly shapes what weapons and tactics are operationally available to Israel. When tunnel systems, command infrastructure, rocket launch sites, and weapons storage are deliberately placed inside dense urban terrain, the attacking force faces a constrained targeting environment that is not of its own making. That does not remove proportionality and precaution obligations, but it does mean the claim cannot evaluate weapon use in Gaza without accounting for the IHL-violating conditions Hamas created and sustains.

EVIDENCE:

Customary IHL Rule 14 defines proportionality as whether expected incidental civilian harm is excessive relative to the concrete and direct military advantage anticipated. It is strike-specific and contains no weapon-category carve-out.
Customary IHL Rule 15 requires constant care and all feasible precautions to spare civilians. Again strike-specific and conduct-oriented, not a categorical urban weapons ban.
The ICRC’s 2022 report calls on parties to “avoid using explosive weapons with a wide impact area in populated areas, due to the significant likelihood of indiscriminate effects” while explicitly noting “the absence of an express legal prohibition for specific types of weapons.” That qualifier directly undercuts the “inherently” framing.
The ICRC President’s 2023 statement says compliance with IHL is “often very difficult” when heavy explosive weapons are used in populated areas — language of practical difficulty, not automatic illegality.
Israel’s 2022 EWIPA statement explicitly contests any reading that the political declaration creates new legal obligations and affirms that the use of explosive weapons in populated areas is lawful in principle when conducted in accordance with LOAC.
The Lieber Institute confirmed that the proportionality assessment is made attack by attack and that it is “inappropriate to consider the total number of civilians killed or wounded in light of the total number of airstrikes” — ruling out weapon-category or aggregate-outcome arguments as legal tests.
ICRC Customary Rule 97 and Rome Statute Article 8(2)(b)(xxiii) establish that Hamas’s use of human shields is an independent war crime that shifts a substantial share of causal responsibility for resulting civilian harm to Hamas, not automatically to the attacking force.

PRIMARY SOURCES:

ICRC Customary IHL, Rule 14: Proportionality in Attack
https://ihl-databases.icrc.org/en/customary-ihl/v1/rule14
The definitive independent statement of the proportionality standard. Confirms no categorical urban weapons ban exists and that the rule is strike-specific excessiveness, not weapon-type prohibition.

“Launching an attack which may be expected to cause incidental loss of civilian life, injury to civilians, damage to civilian objects, or a combination thereof, which would be excessive in relation to the concrete and direct military advantage anticipated, is prohibited.”

↑↑↑ Best source!

Israel’s Statement Regarding the EWIPA Political Declaration, Geneva 2022 https://www.idf.il/media/2vojalxw/israel-s-statement-regarding-the-political-declaration-on-explosive-weapons-in-populated-areas-ewipa-2022.pdf
Official Israeli statement directly contesting the legal status of the EWIPA declaration and affirming that urban use of explosive weapons is lawful in principle under LOAC. The most direct source for rebutting the “inherently” framing.

“It does not create any new legal obligations.”

“Recognizing the lawfulness in principle of the use of explosive weapons in populated areas or otherwise, is important.”

“Such weapons must be used in accordance with the law of armed conflict.”

↑↑↑ best source!

ICRC, “Explosive Weapons with Wide Area Effects: A Deadly Choice in Populated Areas” (2022)
https://blogs.icrc.org/law-and-policy/2022/01/25/explosive-weapons-populated-areas/
The source critics most often use. Useful here in the opposite direction: the ICRC explicitly notes the “absence of an express legal prohibition for specific types of weapons” while calling for avoidance. That qualifier defeats the “inherently” claim from the ICRC’s own text.

“avoid using heavy explosive weapons in populated areas, as a matter of policy, and impose restrictions and limitations on their use.”

“the use of heavy explosive weapons in populated areas. These recommendations cover the entire spectrum from doctrine and policies, to training, planning and conduct.”

↑↑↑ best source!

ICRC Customary IHL, Rule 15: Principle of Precautions in Attack
https://ihl-databases.icrc.org/en/customary-ihl/v1/rule15
Confirms the precautions obligation is conduct-specific and case-by-case. Supports the point that IHL imposes a behavioral standard, not a weapon-category prohibition.

↑↑↑ mid source

Lieber Institute West Point, “Israel-Hamas 2023 Symposium: Attacking Hamas, Part II — The Rules”
https://lieber.westpoint.edu/attacking-hamas-part-ii-rules/
West Point’s law of war research institute directly addressing proportionality in Gaza. Independent academic source, not an Israeli government document. Confirms the attack-by-attack standard and explicitly states that aggregate campaign totals cannot establish legal excessiveness.

“the proportionality assessment is made attack-by-attack. In other words, as a matter of law, a campaign is not “excessive,” although individual attacks comprising the campaign may be. Thus, with respect to the IHL rule of proportionality, it is inappropriate to consider the total number of civilians killed or wounded in light of the total number of IDF airstrikes”

↑↑↑ mid source

STRONGEST COUNTER ARGUMENTS WORTH KNOWING:

In practice, heavy explosive weapons in dense urban areas will frequently fail the proportionality and distinction tests. Even if no categorical ban exists, wide-area effects in densely populated environments make lawful compliance genuinely difficult across many strike types. The absence of a per se rule does not mean most such strikes are lawful. That is a real concession worth making.
The EWIPA political declaration reflects growing international consensus. While not legally binding, it was signed by over 80 states and reflects a direction of travel in international opinion. Dismissing it as purely political without engaging its substance can look evasive.
Specific incidents still require specific justification. Rebutting the categorical framing of the claim does not resolve the question of whether particular high-casualty strikes in Gaza were lawful. The legal framework rebuttal and case-specific accountability are separate questions.

NOTES:

The single word that makes this claim legally vulnerable is “inherently.” That word claims automatic illegality from weapon type and setting alone, independent of any strike-specific analysis. That is not what IHL says and not what the ICRC says, even in its strongest humanitarian statements.

The cleanest debate move is to turn the ICRC’s own language against the claim. The ICRC explicitly noted “the absence of an express legal prohibition for specific types of weapons” in the same document critics use to support the claim. That is not a technicality. It is the ICRC telling readers that the legal prohibition they are implying does not exist.

Best short rebuttal: "Not inherently disproportionate as a legal rule — but often very hard to use lawfully in dense urban areas, and every strike still requires case-specific justification."

Make the honest concession early. Acknowledge that the ICRC has serious humanitarian concerns about heavy explosive weapons in urban areas and that compliance is often very difficult in practice. Then pivot: “often difficult” is not the same as “always prohibited,” and the claim requires the stronger version to work.

Watch for the opponent conflating the EWIPA political declaration with binding law. Ask directly: is it a treaty? Has it been incorporated into customary IHL? The answer to both is no.

**see more:

Addressing Alleged Misconduct in the Context of the War in Gaza.pdf
Hamas-Israel Conflict 2023, Frequently Asked Questions.pdf
Hamas-Israel Conflict 2023, Key Legal Aspects
Public Committee Against Torture in Israel v. Government of Israel.pdf
US Department of Defense Law of War Manual (2023).pdf

A special collection, the war in Gaza.pdf
Curated link collection from INSS, not a standalone source. Use it to locate individual articles on proportionality, warnings, human shields, and siege law. The articles it indexes are the actual sources.

Explorer

Use of heavy explosive weapons in densely populated urban areas is inherently disproportionate

CLAIM:

STATUS:

KEY COUNTERPOINTS:

EVIDENCE:

PRIMARY SOURCES:

STRONGEST COUNTER ARGUMENTS WORTH KNOWING:

NOTES:

Graph View

Table of Contents

Backlinks