Iran has been supplying high-explosive shaped charges to Iraqi terrorists for years, but apparently they’re now changing their tactics.

WASHINGTON – Iran is no longer actively supplying Iraqi militias with a particularly lethal kind of roadside bomb, a decision that suggests a strategic shift by the Iranian leadership, U.S. and Iraqi authorities said Thursday.

Use of the armor-piercing explosives — known as explosively formed penetrators, or EFPs — has dwindled sharply in recent months, said Army Lt. Gen. Thomas Metz, head of the Pentagon office created to counter roadside bombs in Iran and Afghanistan.

Metz estimated that U.S. forces find between 12 and 20 of the devices in Iraq each month, down from 60 to 80 earlier this year. “Someone … has made the decision to bring them down,” Metz told reporters.

Asked if the elite Iranian Republican Guard Corps has made a deliberate choice to limit use of EFPs, Metz nodded: “I think you could draw that inference from the data.”