Senate Armed Services Committee Chairman John McCain (R-AZ) will hold a hearing Thursday to examine foreign cyber threats, marking the first congressional action on investigating hacking since the Obama administration announced its findings about Russia's attempts at influencing the presidential election. The committee will hear from Director of National Intelligence James Clapper and Adm. Michael Rogers, who heads both the National Security Agency and U.S. Cyber Command. The committee will also hear from Under Secretary of Defense for Intelligence Marcell...