Washington (CNN) President Donald Trump said Sunday that he has not yet decided who to nominate to be the next director of national intelligence.

"We have four or five people that are great -- very respected. In the meantime we have our ambassador to Germany who is a very smart person and he's doing a very good job," he told reporters at the White House.

Trump, who has said Grenell is only filling the job temporarily until a permanent nomination is made, refused on Sunday to say who was on the list for the position. He said that he would be announcing it, but didn't say when the announcement would come.

Trump also added that he would be appointing a new ambassador to Germany.

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