The hard-working staff here at Spoiler Alerts has noted the increased interest and attention that economic sanctions have been receiving in D.C. Last year, sanctions played a surprisingly prominent role in the U.S. National Security Strategy. This month, Treasury Secretary Jack Lew gave an excellent speech outlining some general principles on the subject — the first speech of this kind by a policy principal. On Friday, at a Center for a New American Security (CNAS) event, Treasury Undersecretary Adam Szubin expounded further on the matter.