US President Donald Trump is set to announce state department spokeswoman Heather Nauert as his new ambassador to the United Nations, US media report.
One of the reports came from Fox News, where Ms Nauert has previously worked as a presenter.
Nikki Haley had announced in October that she was leaving the post by the end of the year.
Ms Nauert, 48, was made state department spokeswoman in April 2017, her first government position.
Fox News said Mr Trump would