Is it always wrong to expose classified files? A file leak that revealed sensitive information about the war in Ukraine has sparked debate about how much we need to know.
The gamer who gave away America’s secrets
Hot water: Jack Teixeira had security clearance as part of his job with the air national guard. Glossary
Massachusetts - A state in the northeast USA.
Whistleblower - Someone who exposes secretive behaviour by a group or organisation; once used to describe police who blew whistles to signal the scene of a crime.
FBI - The Federal Bureau of Investigation, which investigates crimes on a national level in the USA.
Espionage - Spying.
Minecraft - A 3D computer game in which players can build worlds using building blocks. It has been described as like "an online LEGO".
4chan - A website on which users can anonymously post images and messages, and the subject of several controversies.
Telegram - Today: an encrypted instant messaging app. In the past: a message sent via electric wires and delivered as a printed piece of paper. As every word was expensive, making the message as short as possible became an art. A famous joke telegram sent from Venice read, "STREETS FULL OF WATER PLEASE ADVISE".
White nationalist - Someone who thinks that White people have their own national identity and should have the most power, authority and rights in a country.
Nato - The North Atlantic Treaty Organisation was founded in 1949 to unite Western democracies in Europe and North America against the perceived growing threat of the USSR. It now has 31 members.
Special forces - Elite units within a military that often take part in counterterrorism or other specialised operations.
WikiLeaks - A whistleblowing platform founded by Julian Assange. It has published news leaks and classified documents obtained by anonymous individuals.
Authoritarian - Enforcing strict obedience to authority.