This claim rests on a fundamental and deliberate misidentification of weapon categories under international law. White phosphorus is an incendiary and smoke agent, not a chemical weapon. The Chemical Weapons Convention (CWC), which entered into force in 1997, defines and prohibits weapons that use toxic chemicals to cause harm to humans through their chemical action on life processes — nerve agents, blister agents, and choking agents such as sarin, VX, and mustard gas. White phosphorus does not belong to any of the CWC's three schedules of controlled substances and has never been classified as a chemical weapon by the Organisation for the Prohibition of Chemical Weapons (OPCW), the treaty's implementing body. Conflating the two is either a profound legal error or a calculated propaganda strategy designed to delegitimize Israel's military operations through false analogy.

The Legal Facts

The governing international framework for incendiary weapons is not the CWC but Protocol III of the Convention on Certain Conventional Weapons (CCW), adopted in 1980. That protocol defines an incendiary weapon as one "primarily designed to set fire to objects or to cause burn injury to persons." Critically, Article I of CCW Protocol III expressly excludes from its scope "munitions which may have incidental incendiary effects, such as illuminants, tracers, smoke or signalling systems." White phosphorus smoke shells — the type employed by the IDF for battlefield screening — fall squarely within this exclusion.

• The IDF's own comprehensive legal review, The Operation in Gaza: Factual and Legal Aspects (2009), confirmed that white phosphorus smoke shells were used exclusively to create smoke screens concealing armored forces from Hamas anti-tank squads — a recognized and lawful battlefield necessity.
• The Federation of American Scientists classifies white phosphorus as having "low lethality" when used as intended, and notes that it is "in use around the world" by U.S. and allied military forces for smoke, illumination, and marking.
• The International Committee of the Red Cross (ICRC), through its mines-arms unit head Peter Herby, confirmed: "It's not very unusual to use phosphorus to create smoke or illuminate a target. We have no evidence to suggest it's being used in any other way."
• U.S. General Peter Pace stated plainly after similar allegations against American forces in Iraq: "It is not a chemical weapon. It is an incendiary. And it is well within the law of war to use those weapons as they're being used, for marking and for screening."
• Even if CCW Protocol III did apply in full, Israel is not a party to Protocol III — meaning no treaty obligation is triggered even under that more restrictive framework.

Context: A Recurring Propaganda Tactic

This allegation follows a well-documented pattern. Nearly identical claims were leveled against Israel during Operation Cast Lead in 2008–2009, and against the United States during the 2004 Battle of Fallujah in Iraq. In both cases, the accusations originated from activist NGOs and hostile media outlets that deliberately avoided the critical legal distinction between a chemical weapon and an incendiary smoke agent. NGO Monitor documented how Human Rights Watch rushed to condemn Israel in January 2009 before completing any verified investigation, with headlines and press releases that were widely amplified by aligned media — most of which never issued corrections when the legal analysis proved the claims unsound.

In Lebanon, the IDF's documented use of white phosphorus has been directed at vegetation-covered Hezbollah military infrastructure. As military correspondent Ron Ben Yishai reported in December 2023, Hezbollah deploys mortar and anti-tank missile launchers concealed under thick vegetation that defeats aerial surveillance. White phosphorus shells ignite that cover and create smoke screens that allow Israeli forces to engage legitimate military targets while protecting their own troops. This is a textbook lawful military application, not a war crime — and it is precisely the use that international law has consistently exempted from prohibition.

The Danger of This Myth

Falsely labeling Israel a user of chemical weapons banned under the CWC is not merely a legal error — it is a deliberate act of strategic delegitimization. The CWC is the international community's most important instrument against mass-casualty chemical warfare; its genuine violators include Syria's Assad regime, which deployed sarin against its own population, and Iran, which is credibly suspected of maintaining covert chemical weapons development programs. Equating Israel's lawful use of smoke munitions with these atrocities dilutes the moral and legal gravity of actual chemical weapons use, weakens the normative power of the CWC, and serves the propaganda interests of the very actors — Hamas, Hezbollah, and their Iranian sponsors — who are Israel's adversaries in these conflicts. Every democratic nation that has faced asymmetric urban warfare, including the United States and the United Kingdom, has employed white phosphorus for smoke and marking. Singling out Israel for doing the same exposes the double standard at the heart of this campaign.