India’s economy, so often touted for potential to supplant China as a global engine, is having a hard time getting its arms around inflation. Not that it's too high, but because the pace of price increases is worryingly low. Fixing this will require more than the standard prescription — simply cutting interest rates. The promise of an aggressive and sustained easing is needed, one that brings its own share of challenges.

Ben Carson has surged into the lead of the Republican presidential race, getting support from 29 percent of GOP primary voters, according to a brand-new NBC News/Wall Street Journal poll.