The intelligence agencies signaled on Friday that they would not easily give up their secrets. Dan Coats, the director of national intelligence, pledged to cooperate with the review but also warned that the secrets of the intelligence community, or I.C., must be protected.
“I am confident that the attorney general will work with the I.C. in accordance with the long-established standards to protect highly sensitive classified information that, if publicly released, would put our national security at risk,” Mr. Coats said in a statement.
Though the ultimate power to declassify documents rests with the president, Mr. Trump’s delegation of that power to Mr. Barr effectively stripped Mr. Coats and the C.I.A. of control of their secrets. The move could endanger the agencies’ ability to keep the identities of their sources secret, former intelligence officials said.
Mr. Coats and Gina Haspel, the C.I.A. director, will fight hard to ensure that their most valuable secrets — the identities of sources — are protected, former officials have said. Ms. Haspel has been described as a fierce political infighter, but she has also been careful to cultivate a strong working relationship with Mr. Barr, former officials said.