those tensions with Iran. The Iranians releasing new images they claim are CIA officers running a network of spies in Iran. A claim president trump flatly disputes. Our chief global affairs correspondent Martha Raddatz is tracking the latest. Good morning, Martha. Reporter: Good morning, the CIA would never publicly identify its officers but the images and names that Iran has released puts those individuals in danger, whether they worked for the CIA or not. The images which we have blurred were released as part of what the Iranians claim is a network of spies. The Iranians say the largely western looking men had recruited Iranian nationals working in sensitive positions to obtain information for the U.S. About its nuclear, cyber and military programs. The Iranians also showed business cards from some of the men they claimed worked for the CIA, some matching current or former state department I read a report today about CIA. That's totally a false story. Another lie. They put out propaganda. They put out lies. Reporter: This comes as the first images of those crew members seized by the Iranians, the crew of the ship now in port in southern Iran, armed Iranian guard corps members checking out the ship as soon as it docked. This after that dramatic takeover of the ship by Iranian commandos with a warning to the commercial vessel to turn around. Change your course to 360, 360 degrees immediately. If you obey, you will be safe, Reporter: Within moments the Iranian commandos were rappelling down to the tanker from the helicopter. The British now urgently trying to get that tanker crew and the ship released but so far the Iranians are not budging, George. Martha Raddatz, thanks.