Why Rogue Regimes Take Hostages

In CNN, AHS speaker Michael Rubin discusses the recent U.S. drone strikes:

"The scale of Iran's current hostage-taking -- not only Rezaian but also Iranian-Americans Saeed Abedini and Amir Hekmati -- may pale in comparison with Iranian behavior of decades past. But the use of hostages to extract concessions or dampen the enthusiasm surrounding reconciliation is part of a consistent pattern."