TEMPO.CO, Jakarta - The United States (U.S.) expressed concern about reports that Israel used U.S.-supplied white phosphorus munitions in an October attack in southern Lebanon, White House spokesperson John Kirby said on Monday, Dec. 11, 2023.

"We've seen the reports. Certainly concerned about that. We'll be asking questions to try to learn a little bit more," Kirby told reporters on Air Force One.

Kirby said white phosphorus has a "legitimate military utility" for illumination and producing smoke to conceal movements.

"Obviously, any time that we provide items like white phosphorous to another military, it is with the full expectation that it will be used in keeping with those legitimate purposes ... and in keeping with the law of armed conflict," he said.

When asked about the report that Israel used white phosphorus in Lebanon, Israeli Defense Minister Yoav Gallant, said: "The IDF and the entire security establishment acts according to international law. That is how we have acted and how we will act."

White phosphorus munitions are weapons that use one of the common allotropes of the chemical element, phosphorus. It is used for smoke, illumination, and incendiary munitions.

White phosphorus is pyrophoric and will be ignited by contact with air and it burns fiercely. This material can ignite cloth, fuel, ammunition, and other combustibles.

REUTERS | YUDONO YANUAR

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