Nikki Haley Resigns As U.N. Ambassador

U.S. Ambassador to the U.N. Nikki Haley has resigned. Here she addresses the UN Security Council last month at U.N. headquarter

Updated 4:55 p.m. ET

Nikki Haley is resigning as the U.S. ambassador to the United Nations and will leave the Trump administration at the end of the year, she said Tuesday.

It is not immediately clear what prompted the move. She informed her staff Tuesday, NPR’s Michele Kelemen reports.