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.
Classified - Information that is labelled as top secret, only to be shared with certain people.
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.
Joe Biden - An American politician who was the 46th president of the United States from 2021 to 2025.
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.
Ukraine - A country in Eastern Europe. It was invaded by Russia in February 2022.
Volodymyr Zelensky - Zelensky won more than 73% of the vote to become Ukrainian President in April 2019. Incredibly, he once starred in a satirical drama in which his character accidentally wins the Ukrainian presidency.