Defence Minister Jonathan Coleman returned last night from an inaugural meeting of South Pacific Defence ministers, a new regional grouping driven by Australia.
The United States was invited as an observer along with Britain, but China and Japan, which have a strong interest in the region, were left off the guest list.
The meeting was hosted by the Tonga Government but the organisation for the first meeting has largely been handled by Australia which has a security alliance with the United States.
Mr Coleman signed a treaty with Tonga to allow for easier visits to Tonga by New ealand
Defence Force personnel for exercises with Tonga.
Mr Coleman said the agreement would allow NZDF staff to stay in Tonga temporarily and
enable greater inter-operability with the Tongan Defence Service.