The clone, TeleMessage, was the subject of a reported hack in which the contents of some direct messages and group chats were stolen.

The release of the memo further undercuts the Trump administration’s rationale for using the Alien Enemies Act to deport scores of Venezuelans to a prison in El Salvador.

Gen. Timothy D. Haugh, who was also the head of U.S. Cyber Command, was one of several national security officials fired on the advice of a conspiracy theorist.

No reason was given for the removal of Gen. Timothy D. Haugh. The far-right activist Laura Loomer had called for his ouster in a meeting with President Trump, an official said.

A federal judge ordered the agency to reconsider its firings of employees who had been assigned to diversity recruiting.

Tulsi Gabbard, the director of national intelligence, said she intended to hold officials who released information “accountable.”

The potential appointment has highlighted an emerging foreign policy fault line in the new Trump administration.

Officials confirmed that the N.S.A. managed a system that had been used for sexually explicit chats and L.G.B.T.Q. discussions. An order to fire dozens after the chats were revealed drew scrutiny amid a military purge of transgender soldiers.

The possible purge of officers working on recruiting and diversity comes as the agency moves to comply with the spirit of an executive order banning efforts to diversify the federal work force.

It turns out it is very difficult to vote down a president’s choice for a top post.

The success of one of President Trump’s more divisive cabinet candidates shows his domination over the Republican Senate.

Mr. Fogel, who had lived and taught in many countries, including Russia for nine years, spent 3 ½ years in Russian custody for having cannabis for medical use, and is in poor health.

The Kremlin freed Marc Fogel, a teacher held for more than three years on drug charges, in a deal negotiated by Steve Witkoff, President Trump’s Middle East envoy.

The list of partial names was provided in an effort to comply with an executive order to trim the federal work force.

The full Senate will vote on President Trump’s pick to be the director of national intelligence. She was one of the most contentious cabinet choices.

As Prime Minister Benjamin Netanyahu of Israel prepares to meet with President Trump, the question of whether to strike Iran’s facilities or negotiate with Tehran appears certain to be under debate.

Democrats are united in opposition to her serving as the director of national intelligence. A single Republican no vote would complicate her confirmation by the full Senate.

President Trump’s choice to serve as the director of national intelligence faced tough questions from senators in both parties.

President Trump’s pick to be the director of national intelligence is expected to say she will prioritize ending the “politicization” of intelligence.

Ms. Gabbard, President Trump’s nominee for director of national intelligence, was briefly subject to special scrutiny on airline flights last year, but not, officials say, for the partisan reasons she...

A new analysis that began under the Biden administration is released by the C.I.A.’s new director, John Ratcliffe, who wants the agency to get “off the sidelines” in the debate.

In exchange, the Biden administration released an Afghan man convicted on narcotics charges in 2008.

As C.I.A. director, William J. Burns was deeply focused on China and Russia when the Middle East conflict plunged him back into his old life.

The spy agency is trying to give its teams better tools and make it easier for the private sector to develop technology for their secretive work.

The development of a new generation of drones has revolutionized how wars are fought, according to U.S. officials.

Donald Trump’s pick for the agency’s director seems likely to win some Democratic support for this nomination, but how much is unclear.

The White House has discussed a possible swap with the Taliban for a prisoner at Guantánamo Bay, according to people familiar with the matter.

As tips roll in, most reported incidents involve piloted planes and hobby drones, not foreign spying or secret programs, officials say.

Israel’s offensive against Hezbollah and the cease-fire to stop the fighting in Lebanon have left Hamas increasingly isolated.

The chairman of the Senate Intelligence Committee said hackers listened to phone calls and read texts by exploiting aging equipment and seams in the networks that connect systems.

Leaders of the big telecommunications companies were summoned to the White House to discuss strategies for overhauling the security of the nation’s telecommunications networks amid growing alarm at th...

Israel’s failure to tamp down the short-range rocket threat has put pressure on its government to embrace a cease-fire.

President-elect Donald J. Trump’s pick to be the director of national intelligence has raised alarms among national security officials.

The Biden administration had warned that the United States would consider any Iranian attempt on Mr. Trump’s life to be “an act of war,” officials said.

Ms. Gabbard, a former congresswoman who left the Democratic Party, would hold a top job in the administration, overseeing 18 spy agencies.