Democratic presidential nominee Hillary Clinton’s sending of U.S. intelligence information to her campaign chair’s unsecured email address is “unquestionably” an operations security violation, according to an intelligence expert. “It’s unquestionably an OPSEC violation,” Dr. John Schindler, a former NSA analyst and national security expert, told The Daily Caller News Foundation, regarding an email Clinton sent to Podesta that included U.S. intelligence sources. OPSEC stands for operations security — meaning the keeping of critical military intelligence out of enemy hands. The email was published online by WikiLeaks from Clinton aide John Podesta’s hacked Gmail account. U.S. intelligence officials suspect Russia was...