Why Would Someone Do This?

There's a sailor in the brig here for selling classified information in the mideast. What on Earth will turn out to have been his motivation?

NORFOLK — After refusing to release full details on a pending espionage case involving a petty officer held in the Norfolk brig, the Navy today provided some specifics about the charges .

The Navy’s charges depict Petty Officer 3rd Class Ariel J. Weinmann as a sailor who stole a Navy laptop computer, deserted his ship for more than eight months and traveled the globe, both attempting to give and actually delivering classified defense information to an undisclosed foreign government.