President Trump's choice for a new national security adviser, Robert O'Brien, has been the point man on American hostages held overseas. He's been a private lawyer punctuated by stints in government.

WH national security adviser Robert O'Brien denies new U.S. intelligence reports that Russian actors are interfering to help Trump win a second term, but admits to @GStephanopoulos he hasn't ...

Trump names Robert O'Brien as new national security adviser Wyoming Republican Sen. John Barrasso says Robert O'Brien has a long and distinguished history and will serve well in his position as ...

President Donald Trump named Robert O’Brien, the US hostage negotiator, his new national security adviser on Wednesday. “I am pleased to announce that I will name Robert C. O’Brien ...

National security adviser Robert O'Brien speaks about the coronavirus in the James Brady Press Briefing Room of the White House, Wednesday, April 1, 2020, in Washington.

O’Brien left the Army Reserve as a major in 2005, but his service led to work with the United Nations Security Council from 1996 to 1998, where he helped review billions of dollars in claims ...

President Trump named Robert C. O’Brien as his new national security adviser Wednesday as he seeks to realign his staff and temper internal divisions following the turbulent reign of former ...

Robert C. O’Brien is national security adviser. In the three years since President Trump’s election, the United States has seized the initiative from its adversaries all over the world.

Robert O’Brien, President Trump’s national security adviser, has tested positive for COVID-19, making him the highest profile Trump official to report having the virus.

WASHINGTON – President Donald Trump's national security adviser, Robert O'Brien, has tested positive for COVID-19, officials said Monday, becoming the highest-ranking administration official to ...

President Trump's choice for a new national security adviser, Robert O'Brien, has been the point man on American hostages held overseas. He's been a private lawyer punctuated by stints in government.