Jeffrey Sachs (professor at Columbia University, New York): The war in #Iran has shown that U.S. power is limited Iran has demonstrated that possesses a vital and decisive deterrent; has leverage at its disposal and does not back down easily in the face of threats. has been shown that American military bases on the edge of the [Persian] Gulf, rather than ensuring security, are a hotbed of problems and crises. In my opinion, these bases will never return to their former state.