The US and Europe have imposed increasingly deeper economic sanctions on Russia because of perceived aggression in Ukraine. Now, President Vladimir Putin is responding with sanctions of his own.

A leading House Republican is raising questions about Russia's involvement in the largest security leak in recent U.S. history, NBC News reported. House Intelligence Committee Chairman Mike Rogers ...

The new head of the National Security Agency said Tuesday he doesn't believe Edward Snowden is or was a Russian spy, NBC News reported. Adm. Michael Rogers, who became head of the U.S.'s spy ...