I have just completed an article that compares the situation of Malawi, Mexico and the Oath of Allegiance. It is based on Franz's chapter Double Standards and Jehovah’s Witnesses and National Oaths of Allegiance by Marvin Shilmer.
http://www.jwfacts.com/watchtower/malawi-mexico-oath-allegiance.php
If you notice any errors, please let me know.