Which of the following is considered unclassified information?

Research papers available to the public are considered unclassified information because they are accessible to anyone without restrictions. Such documents are typically published in academic formats or made available through various public channels, meaning they do not contain sensitive or confidential information that could harm national security if disclosed.

In contrast, internal military strategy documents, personnel records of military staff, and classified arms agreements all contain sensitive information that is restricted or classified for specific reasons. Internal military strategy documents may reveal operational plans or tactics, personnel records contain private information about individuals, and classified arms agreements pertain to international security and may involve sensitive defense technology or arrangements, which necessitate its protection from unauthorized access.