Comicbook.com says of Nakia :
"I can say that Nakia, when we meet her, is a War Dog, which means she's one of Wakanda's CIA members," Nyong'o said. "Her job is to spy around the world and report back to keep Wakanda safe and keep Wakanda informed."
I loved the movie Black Panther. I do have issues with its implied politics. Wakanda is an isolationist Monarchy, but so is much of the rest of the Marvel universe. The visual beauty of the movie is stunning. Nakia's outlook on the world in Wakanda's Marvel universe does bear fruit, she convinces her lover, T'Challa, with inadvertent assistance from antagonist Erik Killmonger to become more globally aware and engaging. Besides Killmonger, Nakia is one of the most compelling characters in 'Black Panther'.