Frida Stranne, Halmstad University (IMAGE) Swedish Research Council Caption Frida Stranne has studied US foreign policy from 1776 to modern times. "We can't understand US foreign policy without understanding its driving forces throughout history," she says. Credit Halmstad University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.