English to French Tech/Engineering Government / Politics Foreign Affairs

A State Office in Australia is an office of the Department of Foreign Affairs and Trade located domestically in each state which works with a broad range of stakeholders across the state to advance Australia's international relations and trade interests.

Je me demande quelle serait la traduction la plus correcte et fidèle en français, autre que "Bureau des affaires étrangères" qui n'est pas très précis ?