CNBC's Eamon Javers reports that the U.S. Treasury is imposing new sanctions on Iran, targeting Ali Larijani, key commanders, and 18 individuals and entities tied to a shadow banking network that launders proceeds from Iranian petroleum and petrochemical sales. Javers says the sanctions tighten the financial spigot on the Iranian regime and are a traditional diplomatic action rather than a military action. He notes the move is not indicative of near-term military action, though it does not rule it out.