There was a bit of awkwardness at US President Donald Trump’s lunch with UN diplomats when he made an undiplomatic comment about Nikki Haley, his ambassador to the UN.

Trump was kicking off Monday’s lunch with ambassadors of countries on the UN Security Council when he asked the room if they liked Haley, the US ambassador to the UN.

Trump said that if they didn’t, “she could easily be replaced.”

The comment sparked some awkwardness, but seemed to be taken in jest. Haley and others gathered around the lengthy table laughed.

Trump quickly assured Haley her job was safe. “I promise, we don’t do that,” Trump said, and praised Haley for doing a “fantastic job.”

Haley has been one of the Trump administration’s most vocal members, taking a tough line on Russia and Syria and telling North Korea not to give the US “a reason” to fight.

Haley has been adored by many in the American Jewish establishment for her tough stance against anti-Israel sentiment in the UN.

President Donald Trump, sitting next to US Ambassador to the UN Nikki Haley, speaks during a working lunch with ambassadors of countries on the United Nations Security Council and their spouses, April 24, 2017, in the State Dining Room of the White House in Washington. (AP/Susan Walsh)

President Donald Trump, sitting next to US Ambassador to the UN Nikki Haley, speaks during a working lunch with ambassadors of countries on the United Nations Security Council and their spouses, April 24, 2017, in the State Dining Room of the White House in Washington. (AP/Susan Walsh)