Greg Myre

President Trump is responding to questions about a call he had with Ukraine's president by trying to push the spotlight onto former Vice President Joe Biden and his son Hunter. Here's the backstory.

President Trump's choice for a new national security adviser, Robert O'Brien, has been the point man on American hostages held overseas. He's been a private lawyer punctuated by stints in government.

David Greene talks with NPR's Greg Myre as well as former national security official Brett McGurk about the White House announcement that Robert O'Brien is the pick for national security adviser.

In his memoir, the former NSA contractor says he believes he has been proven right as the U.S. has amended laws regarding government surveillance. But the government still wants to prosecute him.

The CIA has reportedly removed one of its most valuable spies from Russia due to growing concerns that his identity would be uncovered.

U.S.-China tensions are rising on almost every front, and there are plenty of parallels to the U.S.-Soviet rivalry. Analysts say competition is inevitable, but doesn't have to lead to confrontation.

In an interview with NPR, former Defense Secretary Jim Mattis stresses the importance of allies and he also criticizes shifting U.S. policy aims during the wars of the past 18 years.

A U.S. military court judge in Guantánamo Bay, Cuba, has set a trial date of Jan. 11, 2021, though a number of other deadlines would need to be met for the trial to begin then.

For the director of the National Security Agency, Gen. Paul Nakasone, it means relentlessly tracking adversaries in cyberspace and increasingly taking action against them.

The Afghan government has been left on the sidelines as the U.S. and the Taliban have held multiple rounds of talks this year in the Gulf nation of Qatar.

Jeffrey Epstein died at the Metropolitan Corrections Center in Manhattan. The federal facility has housed drug lords and Mafia bosses but most inmates are too poor to afford an attorney.

President Trump says the Texas congressman he planned to nominate as the nation's intelligence chief will remain in Congress. Rep. John Ratcliffe was facing criticism for his limited experience.

Texas Rep. John Ratcliffe is expected to be nominated director of national intelligence and has prosecuted terrorism cases. But he has far less experience than his predecessors.

President Trump tweeted today that Director of National Intelligence Dan Coats is stepping down, and that he will nominate Texas Congressman John Ratcliffe to replace him.

The departure of the director of national intelligence means that almost every senior member of President Trump's original national security team is gone from his or her job.

Britain says Iran's seizure of a British-flagged ship was an "act of state piracy." But Britain declined to join a U.S. naval coalition in the gulf, saying it seeks to form a European-led group.

At least 13 U.S. universities have shut down their Confucius Institutes, which are funded by China's government. Critics say the program could be used to recruit spies or steal university research.

Shrouded in secrecy, cyberattacks are increasingly the weapon of choice for the U.S. to send a message to an adversary, rather than what the military calls kinetic measures.

The U.S. is shifting its cyber defense strategy toward a more offensive posture. This means implanting malware in adversaries' data networks in the event of future conflict.

Two very large aerospace-and-defense firms want to become one massive company. But if Raytheon and United Technologies go ahead with a merger, will it reduce competition among military contractors?