It's no secret that governments around the world keep tons of highly sensitive information classified. This classified data, when no longer deemed a matter of national security, is typically declassified and shared with archives and the media. However, not all government disclosures are intentional; there have been instances where classified information pertaining to war, terrorism, and democratic schemes were unintentionally revealed.
Take a look at the gallery below to explore some of the most significant government secrets that were accidentally brought to light.