Justice Dept. Says Facts Did Not Justify Continued Wiretap of Trump Aide

WASHINGTON — The Justice Department has conceded to a secretive intelligence court that the available evidence…

Struggle Between N.S.A. and Congress Over Ukraine Records Breaks Into Open

A long-simmering conflict between the National Security Agency and the House Intelligence Committee broke into the…

Justice Dept. Investigating Years-Old Leaks and Appears Focused on Comey

WASHINGTON — Federal prosecutors in Washington are investigating a years-old leak of classified information about a…

Intelligence Officials Invited to Testify to House Amid Uncertainty

WASHINGTON — Representative Adam B. Schiff, the chairman of the House Intelligence Committee, issued invitations on…

In Huawei Battle, China Threatens Germany ‘Where it Hurts’: Automakers

VW, Daimler and BMW sell more cars in China than anywhere else and many already cooperate…

F.B.I.’s Proposed Fixes Are Inadequate, Expert Tells Surveillance Court

WASHINGTON — The F.B.I.’s plan to fix problems with its national security surveillance do not go…

N.S.A. Takes Step Toward Protecting World’s Computers, Not Just Hacking Them

WASHINGTON — The National Security Agency has taken a significant step toward protecting the world’s computer…

F.B.I. Apologizes to Court for Botching Surveillance of Trump Adviser, and Pledges Fixes

WASHINGTON — A chastened F.B.I. told a secretive court on Friday that it was increasing training…