A sophisticated bomb that the US military has tracked to Iran was used in a record number of attacks on American-led troops last month, the New York Times reports. The bombs—called explosively formed penetrators—fire a semi-molten copper slug that can break through the armor of a Humvee. They were responsible for 99 strikes and a third of the 69 combat fatalities in July, according to the military.
The bombs have been linked to Iran by interrogated Shiite militants, according to American military intelligence. Officials also cite technical similarities among bombs recovered in Iran, Iraq and Lebanon, where they have been used by Hezbollah. Iran has denied responsibility, and White House critics claim the accusations are an attempt to shift blame for policy blunders.