The two parts have quite distinct characteristics, though both tribes are subgroups of the Waziri tribe, after whom the region is named,[3] and speak a common Waziristani dialect. They have a reputation as warriors and are known for their frequent blood feuds. Traditionally, feuding local Waziri religious leaders have enlisted outsiders in the Pakistani government, and more recently U.S. forces hunting al-Qaeda fugitives—in attempts at score-settling.