As a footnote to the prior discussion, it has now come to light that Afghanistan apparently does have a copyright law [1]. It was enacted in the summer of 2008, and establishes life+50 years protection for many works, including those published before the law was enacted. Unfortunately, none of the wiki editors had noticed this apparent change of status during the last 3.5 years.
-Robert Rohde
[1] http://www.wipo.int/wipolex/en/text.jsp?file_id=241541 (English version)