WASHINGTON - Outgoing US Secretary of State Hillary Clinton, who came tantalizingly close to winning the Democratic presidential nomination four years ago, played down the notion she would run again for the White House in 2016 in comments aired on Wednesday.

Clinton for the past four years has served as chief diplomat for President Barack Obama, who edged her for the party's nomination in 2008, but she is stepping down from the post. Obama was elected last month to a second four-year term as president.

Asked during an interview with ABC's Barbara Walters whether she would run for president in 2016, Clinton said: "I've said I really don't believe that that's something I will do again. I am so grateful I had the experience of doing it before."

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