This photo taken on June 19, 2013 shows Federal Bureau of Investigation (FBI) Director Robert Mueller testifying before the US Senate Judiciary Committee on Capitol Hill in Washington. Deputy Attorney General Rod Rosenstein on May 17, 2017, named Mueller as special counsel to lead the probe into alleged Russian meddling and possible collusion with US President Donald Trump's team, as the president stands accused of seeking to stall the investigation.
This photo taken on June 19, 2013 shows Federal Bureau of Investigation (FBI) Director Robert Mueller testifying before the US Senate Judiciary Committee on Capitol Hill in Washington. Deputy Attorney General Rod Rosenstein on May 17, 2017, named Mueller as special counsel to lead the probe into alleged Russian meddling and possible collusion with US President Donald Trump's team, as the president stands accused of seeking to stall the investigation. SAUL LOEB AFP/Getty Images
This photo taken on June 19, 2013 shows Federal Bureau of Investigation (FBI) Director Robert Mueller testifying before the US Senate Judiciary Committee on Capitol Hill in Washington. Deputy Attorney General Rod Rosenstein on May 17, 2017, named Mueller as special counsel to lead the probe into alleged Russian meddling and possible collusion with US President Donald Trump's team, as the president stands accused of seeking to stall the investigation. SAUL LOEB AFP/Getty Images

Mueller brings toughness and credibility to a difficult probe

May 18, 2017 06:07 PM

UPDATED May 18, 2017 11:45 PM

More Videos

  • A drought helped set the stage for the Syrian War

    Stephen A. Cheney, a retired U.S. Marine Corps brigadier general and CEO of the American Security Project, argues that climate change in the form of a historic drought contributed to the Syrian War and the rise of ISIS.