But, as she said herself, she had a track record in shaking up staid, traditional government bodies - a quality that surely appealed to Trump.
Haley's decision surprised several senior White House aides, Chief of Staff John Kelly and Vice President Mike Pence.
Trump said Haley first told him about six months ago that she would like to "take a little time off" at the end of this year.
There has been frequent speculation that Haley harbors her own presidential ambitions.
Haley, a rookie to global politics, was an unusual pick for to be United Nations envoy.
Powell was with Haley in SC over the weekend, according to a photo posted to her Twitter feed. An April 2018 Quinnipiac poll found Haley garnering a whopping 63% approval rate from Americans, with 75% of Republicans, 63% of independents and 55% of Democrats approving of her job performance.
Her with-us-or-against-us approach grated on many diplomats, but she was widely considered to be an internationalist ally, our correspondent adds.
The president said she "has been very special to me, she has done an incredible job, she is a fantastic person, very importantly, but she is also somebody that gets it".
Though she's criticized some of Trump's moves, she wrote in a Washington Post op-ed on September 7 - after the infamous anonymous op-ed in the New York Times rocked Washington - that she "proudly" serves in the Trump administration. Some even suggested Haley was running for president in 2020 with Trump's support.
She said she would be campaigning for "this one", pointing to Mr Trump.
Pompeo has led policy on talks with North Korea, while Bolton has taken the lead on trying to implement Trump's hard line against Iran.
Nikki Haley, the US ambassador to the United Nations, announced her resignation Tuesday in a move that President Trump said had been in the works for months, but which caught many White House officials by surprise.
"I expect to continue to speak out from time to time on important public policy matters, but I will surely not be a candidate for any office in 2020", she wrote.
Her conservative views and plainspoken but warm style were popular in her home state. She cited US action on Syrian chemical weapons, trade deals, the arms embargo in South Sudan, U.N. sanctions against North Korea, pulling out of the Iran nuclear deal and moving the USA embassy in Israel to Jerusalem. "Countries may not like what we do, but they respect what we do", Haley said. If Haley's exit isn't imminent, why not wait till after the election so it doesn't look like the administration is shedding one of its best-liked, steadying forces?
"They should be heard, and they should be dealt with", Haley told CBS. "And I do think that sometimes it's good to rotate in other people who can put that same energy and power into it", Haley said. I am proud of our record.
Haley has long taken a tougher public stance on Russian Federation than Trump, who has sought better relations with President Vladimir Putin.
The announcement has especially shocked supporters of Israel. Trump then decided not to go ahead with the move.
After Thursdays meeting, both West and his famous wife Kim Kardashian West will have met with Trump to discuss prison reform. West grew up and recently said he planned to return, according to the person briefed in the meeting.
In Malawi, Melania visited the Chipala Primary School where she donated textbooks, balls and supplies to the pupils and teachers. Image copyright Reuters Image caption The US First Lady's decision to wear a pith helmet on safari in Kenya has drawn criticism.
In the same post, without taking names, Nanda has alleged that Alok Nath was after the lead actress of the show - Navneet Nishan . Menon posted screenshots of her conversations with the alleged victims, leading to a massive outcry on social media.
Google is also following from its limiting of Gmail scans by limiting which applications - namely, down to email apps - can do so. Unfortunately, whether you've forgotten about it or not, if you have a Google + account, your data may have been put at risk.
Dawn Sturgess , 44, died in June after being exposed to the same weapons-grade nerve agent after it was apparently discarded. Both suspects appeared on Russian state TV last month, proclaiming their innocence.
NY and Boston split at Fenway Park and are tied 1-1 in the best-of-five AL Division Series going into Game 3 on Monday night. In the eighth, facing lefty Stephen Tarpley, he hit an RBI double, putting himself a homer shy of history.
The new Doctor Who Jodie Whittaker , centre, with fellow castmates Mandip Gill , Tosin Cole and Bradley Walsh . She takes control of situations, she's okay with coming off odd and she's hard to understand sometimes.
The National Alliance would have thirteen and the Unit, renamed the New Unit, could not cross the eligibility threshold of 5%. Latvia is a member of both the eurozone and North Atlantic Treaty Organisation , having joined the military alliance in 2004.
It's a young team, and it's a different pressure. "When you are younger, it is more hard to deal with, but that's the way it is". The 55-year-old will be desperate to achieve this quickly as United's next run of fixtures are incredibly competitive.
The new government of Prime Minister Imran Khan had promised millions of new jobs and the creation of an "Islamic welfare state". This story has been published from a wire agency feed without modifications to the text. "We have looked at all our options".
We don't know about the price just yet but it's expected to be somewhere around, or likely upwards of AUD $1079. Business Insider will be there covering the event live, but you can also watch a live-stream on Twitter .
North Korea wants Pope to visit, South to tell Vatican
Yi criticized Pompeo for the US government's actions towards Taiwan, claiming that Washington is interfering in Chinese affairs. China and the United States are at odds over trade and Beijing's militarization of islands it claims in the South China Sea.
Limo in NY crash that killed 20 failed inspection
The Board is investigating the crash, including whether the limo had any mechanical problems. "One of them had two children". Schumer added, "I commend the NTSB's immediate aid on scene and am very confident that we will have concrete answers soon".
Sky Sports pundit aims Man City barb at Reds’ title chances
They're playing an attractive brand of football and Eden Hazard has been the standout player in the Premier League thus far. But if it is an open game at Anfield, or any open game against Liverpool, you don't even have one percent of a chance.
Watch Google's Pixel 3 Event Live Stream Right Here
Lastly, we may also see the Pixel Buds 2, the improved version of truly wireless headsets, and an alternative of Apple AirPods. Although it's not been confirmed by Google it's nearly certain that two devices will be shown to the world during the keynote.
Betting suspended on The Everest 12:30pm
Meanwhile, radio commentator Alan Jones , who last week launched into an aggressive argument with Sydney Opera House CEO Louise Herron over the ad, has apologised for his remarks .
Redskins vs. Saints - Game Recap
It was a showing that didn't do Washington any favors as it battles through a division that is anyone's game. Gruden also said running back Adrian Peterson has a shoulder strain and will have an MRI.