Secretary of State Rex Tillerson, who will accompany President Trump on his trip to Asia, didn’t exactly get a ringing endorsement from the commander-in-chief — who said “We’ll see” whether the top diplomat serves out the duration of Trump’s term.

During a Fox News interview Thursday, Trump was asked by host Laura Ingraham whether Tillerson “would be with you for the duration.”

“We’ll see. I don’t know who’s going to be [here for the] duration,” the president replied — also noting that Tillerson was “working hard” and “doing his best.”

Trump also dismissed the notion that State Department vacancies were affecting his ability carry out his foreign policy agenda.

“We don’t need all the people they want us to get,” Trump said. “I am a business person. When you don’t need to fill slots, don’t fill them. We don’t need all the people they want us to get.

“Let me tell you ― the one that matters is me. I’m the only one that matters because when it comes to it, that’s what the policy is going to be.

“We have some people that I’m not happy with there,” he added, in a possible reference to holdovers from the Obama administration.

The relationship between Trump and Tillerson has been fraying ever since NBC News reported last month that Tillerson considered quitting in the summer, at one point reportedly referring to Trump as a “moron.”

The White House called the report “fake news” and Tillerson, in a rare news conference, denied that he threatened to resign.

“I have never considered leaving this post,” he said at the time. “My commitment to the success of our president and our country is as strong as it was the day I accepted his offer to serve as secretary of state.”

Tillerson has refused to deny that he called Trump a “moron” after hearing him say he wanted a tenfold increase in the nuclear arsenal.

“I’m not going to deal with that kind of petty stuff,” he said.

Trump had publicly criticized Tillerson’s diplomatic efforts amid North Korean despot Kim Jong Un’s nuclear threats.

Tillerson is “wasting his time trying to negotiate with Little Rocket Man,” Trump tweeted on Oct. 1, adding that the US will “do what has to be done!”