World News National Economy Treasury Secretary Jack Lew Defends The 'Smart Power' Of Economic Sanctions 5:09pm March 30, 2016 by David Welna ECONOMY U.S. World National Security Share URL copied to clipboard! Copyright 2016 NPR. To see more, visit NPR. 300x250 Ad More All Things Considered Science Days are getting slightly longer — and it's due to climate change by Lauren Sommer What happened to the glamorous days of airline travel? You pay for what you get by Erika Beras 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate