In recent days, the Taliban has demonstrated how seriously those threats should be considered. Late last week, just four days after the documents were published, death threats began arriving at the homes of key tribal elders in southern Afghanistan. And over the weekend one tribal elder, Khalifa Abdullah, who the Taliban believed had been in close contact with the Americans, was taken from his home in Monar village, in Kandahar provinces embattled Arghandab district, and executed by insurgent gunmen.