In 2015, sanctions played a key role in bringing Iran to the negotiating table but now warfare has been the primary tool. Oliver Wyman Partner and Global Anti-Financial Crime Practice Leader Daniel Tannebaum explains to David Gura and Christina Ruffini on Bloomberg This Weekend how even if sanctions on Iran are lifted, businesses may remain hesitant to reengage with Iran due to lingering risks. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on