Researchers can't prove their theory about Putin and Asperger's, the report said, because they were not able to perform a brain scan on the Russian president.

However, Porges said Wednesday he had never seen the finished report and "would back off saying he has Asperger's."

they are also observed in individuals who have difficulties staying calm in social settings and have low thresholds to be reactive.

Putin suffered a huge hemispheric event to the left temporal lobe of the prefrontal cortex

U.S. officials should present "the information-craving" Putin with "meaty policy research and white papers," Connors recommended.