Chief US Weapons inspector Charles Duelfer issued an urgent warning about the weapons cache at Al-Qaqaa—in 1995—and the International Atomic Energy Agency opted to ignore the warning and let Saddam Hussein keep his explosives.

WASHINGTON - Nine years ago, U.N. weapons inspectors urgently called on the International Atomic Energy Agency to demolish powerful plastic explosives in a facility that Iraq’s interim government said this month was looted due to poor security.

The chief American weapons inspector, Charles Duelfer, told The New York Sun yesterday that in 1995, when he was a member of the U.N. inspections team in Iraq, he urged the United Nations’ atomic watchdog to remove tons of explosives that have since been declared missing.

Mr. Duelfer said he was rebuffed at the time by the Vienna-based agency because its officials were not convinced the presence of the HMX, RDX, and PETN explosives was directly related to Saddam Hussein’s programs to amass weapons of mass destruction.

Instead of accepting recommendations to destroy the stocks, Mr. Duelfer said, the atomic-energy agency opted to continue to monitor them.

By e-mail, Mr. Duelfer wrote the Sun, “The policy was if acquired for the WMD program and used for it, it should be subject for destruction. The HMX was just that. Nevertheless the IAEA decided to let Iraq keep the stuff, like they needed more explosives.”