Greg Myre

Some Washington, D.C., residents have taken to calling Capitol Hill the "Capitol Green Zone" as a wide range of security measures are put in place ahead of the inauguration.

In a public memo, U.S. top military leaders have condemned the insurrection at the U.S. Capitol and pledged to protect and defend the Constitution.

The riot appeared to be all chaos and anarchy. But as researchers gave the online video and photos closer scrutiny, they produced forensic evidence that has identified those involved.

William Burns worked for decades at the State Department. President-elect Joe Biden says he "shares my profound belief that intelligence must be apolitical."

Law enforcement officials say they expect to make more arrests following last week's riot at the U.S. Capitol. Security officials are also examining some militia groups' call for more rallies.

Armed with pro-Trump banners, the rioters far outnumbered and swiftly overwhelmed the Capitol Police as they charged up the steps, smashed windows, broke into the Senate chamber and occupied offices.

When a mob stormed the U.S. Capitol, they faced surprisingly little security for such an important location. The mob smashed windows and rampaged through both the House and Senate chambers.

In its most detailed comment so far, the U.S. government says the breach of government and private company computer networks "will require a sustained and dedicated effort to remediate."

One year after the killing of Iranian Gen. Qassem Soleimani, NPR correspondents discuss what happened since and what Iran policy might look like under the Biden administration.

At age 9, Dr. Salk was one of the first to get the polio vaccine in the 1950s that was invented by his father. Salk, now 76, says he's hugely impressed by the rapid development of the COVID vaccine.

How should the U.S. respond to the massive computer hack into government networks and private companies? This has been a recurring question in the cyber age, and there is still no clear playbook.

Microsoft says it has identified 40 government agencies, companies and think tanks that have been infiltrated. Most are in the U.S., but the breaches stretch around the globe.

FireEye was the first to sound the alarm bell on Dec. 8 after it noticed an anomaly. "Right now there's absolutely an escalation in cyberspace," says Kevin Mandia, the company's CEO.

The massive computer hack didn't just target U.S. government systems. Many private companies were also hit, and the hackers have picked on tech companies in particular.

After several days of relative silence, the U.S. cybersecurity agency now says a major computer hack poses a "grave risk", extending throughout federal, state and local government.

President Trump keeps repeating baseless claims that his opponents broke into election systems. But he hasn't commented on the suspected Russian hack of U.S. government agencies.

Russian government hackers have breached email systems at federal agencies. It's being called the largest and most sophisticated hack in the past five years.

The California-based company is often called by governments and companies around the world to protect against hacks and respond to breaches. FireEye acknowledged that some valuable tools were stolen.

The study by the National Academies of Sciences comes after dozens of U.S. diplomats in Cuba and China complained of migraines, dizziness and memory loss.

The former military officers are strong supporters of the president and have backed some of the most outlandish election conspiracy theories and, for some, calls for martial law.