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The group also has targeted members of Iran‘s Revolutionary Guard, the country’s most powerful military force.

In its deadliest attack, a suicide bomber hit a meeting between Guard commanders and Shi’ite and Sunni tribal leaders in the border town of Pishin in October 2009, killing 42 people, including 15 Guard members.

Drug traffickers and smugglers also are active along the barren frontier area of Iran, Pakistan and Afghanistan and have launched attacks on security forces.