VOA State Department correspondent Scott Stearns and VOA Kurdish reporter Motabar Shirwani conducted a wide-ranging interview with U.S. Undersecretary of State Richard Stengel about the Islamic State, Ukraine and Ebola.

The digital revolution has had a massive impact on the practice of foreign policy, revealing challenges and opportunities for modern diplomacy. But where is the line drawn between confidentiality and transparency?

One of Britain’s highest-ranking intelligence officials on Tuesday castigated the giant American companies that dominate the Internet for providing the “command-and-control networks of choice for terrorists and criminals” and challenged the companies to find a better balance between privacy and security.

A day after President Dilma Rousseff squeaked out a close electoral victory, Brazilian voters vented their frustrations one way they know best: on social media.  Online debates between supporters of the president and her unsuccessful rival Aécio Neves were hostile, in a country with one of the world’s deepest penetration of social-media use.

“It is only when we contest (ISIS') presence online, deny the legitimacy of the message it sends to vulnerable young people and expose (ISIS) for the un-Islamic cult of violence it really is ... that (ISIS) will truly be defeated,” Allen said.

Britain’s Queen Elizabeth II sent her first ever tweet during a visit to a museum Friday, signing it “Elizabeth R” - and even removing a glove to post it.  Another tweet on the same account shortly afterwards said that the previous one was “sent personally by The Queen”, adding its own hashtag for the event -- #TheQueenTweets.