Exclusive: Iran's surging crypto activity draws US scrutiny

The harder one squeezes the Iranian economy, the more one better be ready to deal with the consequences, one of which is the expanding use of crypto," said Tom Keatinge, director of the Centre for Finance and Security at UK think-tank the Royal United Services Institute...RUSI's Keatinge said the scale of the challenge facing U.S. authorities was enormous. "It requires significant resources to do the kind of blockchain tracing and so on, to issue the sanctions," he added. "It's the ultimate high-speed whack-a-mole game."