Salla developed the exopolitics framework, arguing that extraterrestrial civilizations have been interacting with Earth for millennia and that secret government agreements exist with some of these civilizations.

Salla earned a PhD in political science from the University of Queensland and taught at Australian and American universities.

Notable works: Exopolitics: Political Implications of the Extraterrestrial Presence, The US Navy's Secret Space Program

Representative statement: Salla asserts that multiple extraterrestrial civilizations are visiting Earth and that covert human organizations have established relations with them.

Salla's work is considered speculative by mainstream scholars but has influenced the alternative UFO community.

Salla is a leading figure in exopolitics, offering a political‑science perspective on extraterrestrial contact.