Haley on Wednesday confirmed the resignations of chief of staff Steven Groves and communications director Jonathan Wachtel, citing "family concerns" in a tweet.
The resignations come as Haley heads to Vienna on Thursday to review Iran's nuclear activities with United Nations atomic watchdogs.
Beachgoers watch migrant boat land on Spanish shore
Raw video shows the men storming the beach near the southern Spanish resort of Tarifa at around 2 p.m. on Wednesday afternoon. Only around 300 migrants managed to reach the border fence, where they were stopped by agents of the Civil Guard.
Wachtel said in a telephone interview that he was leaving for "family reasons".
"Both Jonathan&Steve have recently encountered family concerns", Haley said. "They will always be a part of the team & dear friends", she wrote.
Since that time, President Donald Trump this week warned North Korea will "be met with fire and the fury like the world has never seen" if the totalitarian state continues to threaten America.
Before serving as Haley's communications director, Wachtel worked as a journalist and producer at Fox News for almost two decades.
- GE delays new Boston HQ opening
- Affaire Azaria: c'est la fin d'une saga judiciaire
- Polish train near miss
- A warm end to the week, but rain is on the way
- Mariah Carey's former choreographer says superstar's performances are "lackluster"
- Parsing Tough Rhetoric On North Korea 15:00 Download
- Jose Mourinho singles out one player for praise after Real Madrid defeat
- Manafort Shakes Up Legal Team Amid New Reports On Federal Investigation
- BWF Rankings: HS Prannoy back in top 15
- Rafael Nadal upset by Denis Shapovalov at Montreal Masters