Donald Trump Has a Potent Weapon Against Iranian Oil 4/8/2018 4:14:18 PM   facebook Google+ ► Print United States President Donald Trump By: Julian Lee Bloomberg, April 8, 2018  - Citigroup Inc., Societe Generale SA, Royal Bank of Canada, Mitsubishi UFJ Financial Group Inc. Analysts at all these banks think the chances of sanctions on Iran snapping back into effect are much greater now that Mike Pompeo has been nominated Secretary of State and John Bolton appointed National Security Advisor. Not the most startling insight given the characters involved, but many banks now include so-called 'snapback' for Iran in their base-case energy scenarios. Yet they're remarkably sanguine about the impact on oil supplies from the country. SocGen sees 500,000 barrels a day of exports at risk; the others, less than 350,000. The previous sanctions cut Iran's production by more than 1.2 million barrels a day at their peak. So you'd have to a...