Argo is indeed a real story. The movie was based on a true operation that was carried out. Many of the details and characters are drawn from real-life counterparts.
I'm not sure who Victor Marx specifically is in this story without more details. He could be an ordinary person with an extraordinary story, or he might be someone well - known in a particular area.
The 'Argo' film is based on the true story of the rescue of six American diplomats during the 1979 Iran hostage crisis. The CIA came up with a plan to pretend to be making a science - fiction movie called 'Argo' as a cover to extract the hostages. It was a complex and dangerous operation that involved a lot of meticulous planning and acting to deceive the Iranian authorities.
Argo is indeed a true story. The movie is a dramatization of a real-life operation that took place. However, like many films based on true events, some details might have been changed or embellished for cinematic purposes.