Points out myriad conflicts with EU law, and raises the serious question as to who will arbitrate disputes:

Such a conflict touches on a problem that has dogged the EU for years: Which is more powerful, EU law or international law? Can agreements between individual countries, such as a 17-plus treaty, change EU law? If not, an agreement such as the one reached last Friday at the EU summit remains essentially nothing more than a nonbinding statement of intent on the part of the euro-zone countries and the other, voluntary participants.