One of Ben Carson's foreign policy advisers is claiming that the retired-neurosurgeon-turned-presidential-candidate has been unable to process "one iota of intelligent information about the Middle East".
According to a New York Times report, Duane R Clarridge - a retired Central Intelligence Agency official who has been coaching Mr Carson on international affairs for several years - has been frustrated with Mr Carson's inability to comprehend the intricacies of national security despite regular briefings from experts.
New York Magazine's Jonathan Chait quips that Mr Carson's "advisers now appear genuinely terrified that he might be elected president and are doing everything in their power to stop it."
http://www.bbc.com/news/world-us-canada-34851495