The Latest Breaking News from Daniel Ellsberg

The whistleblower inspired acts of retaliation by President Richard Nixon that helped lead to the downfall of his presidency.

Ellsberg's release of what were called the "Pentagon Papers" hastened the end of the Vietnam war, prompted a landmark Supreme Court ruling and contributed to the downfall of President Richard Nixon.

We look at what's fact and what's fiction in White House Plumbers episode 1, including how they got their name and how Howard left the CIA.

The law is clear. If you mishandle, distribute or disclose classified information you can get in big trouble. In the worst cases, as with Jack Teixeira, the 21-year-old Air National Guardsman who has been accused of divulging top secret national security documents, you can be arrested, charged under the Espionage…

The subject matter may differ but the US government has been relentless in pursuing those accused of national security leaks

A post-9/11 switch from ‘need-to-know’ to ‘need-to-share’ explains why a low-level guardsman had access to such sensitive material

The establishment has tried to sanitize Ellsberg. But his lessons on the madness of war are even more relevant now

Call them whistleblowers or traitors, call their actions conscientious or unconscionable, the people who decide on their own to share classified material have often altered the course of events.

The man who copied and leaked documents that revealed secret details of U.S. strategy in the Vietnam War posted on Facebook Thursday that he has inoperable pancreatic cancer, which is one of the deadliest cancers.