* In 1989 Australia and Indonesia signed the Timor Gap Treaty when East Timor was still under Indonesian occupation.
* East Timor was left with no permanent maritime border and Indonesia and Australia got to share the wealth in what was known as the Timor Gap.
* In 2002 East Timor gained independence and the Timor Sea Treaty was signed, but no permanent maritime border was negotiated.
* East Timor has long argued the border should sit halfway between it and Australia, placing most of the Greater Sunrise oil and gas field in their territory.
* In 2004 East Timor started negotiating with Australia again about the border.
* In 2006 the CMATS treaty was signed, but no permanent border was set, and instead it ruled that revenue from the Greater Sunrise oil and gas field would be split evenly between the two countries.
Foreign Minister Julie Bishop has intervened in an application by a former senior intelligence agent to have his passport returned, rejecting his application on the grounds he is a threat to national security.