Nikki Haley, the former American ambassador to the United Nations, will seek the Republican nomination for president, squaring off against former President Donald Trump, in the contest for the White House. #News #Reuters #newsfeed #USA #NikkiHaley Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: https://www.reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en