The supposed merits of buy-backs are complicated by what looks like a conflict between theory and practice.

ECONOMIST: Buttonwood

While this may sound fine in theory, in practice these requirements can conflict with the right of people to come together in free association.

WSJ: McGurn: The Chick-fil-A War Is Back On

Another theory is that Pakistan is trying to provoke international intervention in a conflict that India wants to keep strictly bilateral.

ECONOMIST: Kashmir��s violent spring

The U.S. could, in theory, disable or deny access to the system by others in the event of a conflict, although it says it never has done so in the past.

WSJ: Beijing Launches GPS Rival