A nation's defence doctrine is defined by its vulnerabilities. In Australia's case our geographic vulnerability is the Air-Sea gap. This is the North-West shelf, the Timor Sea and the Coral Sea. In addition to protecting the approaches to Australia by projecting across this gap, there also natural assets such as oil, gas and fishing in these areas. With the retirement of the F111, Australia will be losing a large part of its projection across that area without anything to replace it. (more)

