03/24/2014 08:47 am ET Updated Mar 24, 2014

U.S. Scurries to Shore Up Spying on Russia

Trevor Paglen

America's vaunted global surveillance is a vital tool for U.S. intelligence services, especially as an early-warning system and as a way to corroborate other evidence. In Crimea, though, U.S. intelligence officials are concluding that Russian planners might have gotten a jump on the West by evading U.S. eavesdropping.

Read more on Wall Street Journal