Probably the most efficient method would be to force all the binders into unbreakable oaths not to rebel. You are, of course, still losing a significant portion of the total magical powers of the population by using unbreakable vows en-masse like this, and far from other countries seeing and wanting to copy this system, they're liable to see it as either an exploitable weakness or a human rights violation, in which case this society could be facing trade sanctions, embargoes, or even war.
Look at how effective those are in the real world. You have countries ignoring sanctions and embargoes because there's a lot of money to be made that way. As for wars with large coalitions, you have the inevitable issues of members suspecting other members of not holding up their end of the war, or using the war to unfairly increase their power vis-a-vis the other members of the coalition.
Of course, it's not hard to solve all these problems using unbreakable vows, but well. ;)
You have countries ignoring sanctions and embargoes because there's a lot of money to be made that way.
But you also have success stories of sanctions and embargos inflicting serious pain: just to name the ones I know of off the top of my head, Japan apparently felt itself forced into WWII by a US embargo of necessary supplies, North Korea remains a hellhole and has trouble selling stuff like it used to which forced it to come to the negotiating table over the bank embargos, and Iran is currently grappling with uncontrollable inflation (which may result in hyperinflation) which is attributed to the existing relatively mild sanctions.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 87. The previous thread has passed 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: