Film star Brian Donlevy landed his only series gig with Ziv's 1952 entry, Dangerous Assignment, which made the transition from radio to television, but lasted just 1 season.
Donlevy played government agent Steve Mitchell, who traveled the globe chasing down the bad guys. In some respects, the lesser known Secret File USA, which came out a couple of years later, trod the same ground, and also lasted one season.
Here's the intro:
Given today's more volatile climate overseas, I doubt this would be considered for a revival.