WASHINGTON (AP) — President Donald Trump is flexing his executive power to declassify secret documents in the Russia investigation, an extraordinary move he says will ensure that "really bad things" at the FBI are exposed. But the decision, made against the backdrop of Trump's spiraling outrage at the special counsel's Russia investigation, may expose sensitive sources and methods and brush up against privacy law protections, experts say.

The order is likely to further divide the president from the intelligence agencies he oversees and raises new concerns that Trump is disclosing government se...