Inside the 24-Hour Scramble Among Top National Security Officials Over the J.F.K. Documents

The director of the Central Intelligence Agency emphasized that some documents had nothing to do with the assassinated president, according to people familiar with the discussions.

Plan to Return Russian Diplomats to U.S. Poses Espionage Risk

The Trump administration is negotiating the return of more Russian diplomats to the United States. Some are likely to be spies.

State Dept. Plans to Close Diplomatic Missions and Fire Employees Overseas

American officials, including in the C.I.A., are concerned about mass closures hampering national security work. And China has overtaken the United States in global diplomatic footprint.

C.I.A. Director Says U.S. Has Paused Intelligence Sharing With Ukraine

Trump administration officials say the halt in assistance is a warning to the Ukrainians of the consequences of not cooperating with the president.

Trump Officials Split Over How Hard to Go on Mexican Cartels

A Mexican delegation will meet in Washington on Thursday to finalize a security deal, as White House officials debate a strategy for fighting cartels and stemming the flow of drugs across the border.

C.I.A. Expands Secret Drone Flights Over Mexico

The covert program, begun during the Biden administration and stepped up by President Trump, is hunting for the location of fentanyl labs.