An unprecedented pre-presidential inauguration feud between Donald Trump and intelligence agencies that soon will be under his command could harm U.S. security if not quickly defused, current and former government officials said.

They said morale at the CIA and other agencies was already sagging because of disputes with Trump over whether Russian President Vladimir Putin ordered interference in the U.S. election and over leaks about an unsubstantiated dossier compiled by a private security firm suggesting Moscow had compromising information on Trump.

Unless addressed, the disputes could prompt the departure of personnel and lead those who remain to take fewer risks to counter security threats, the officials said.