Australia
Marise Payne
Minister for Defence

Brunei
Major-General (Rtd) Haji Awang Halbi
Minister of Defence II

Fiji
Ratu Inoke Kubuabola
Minister of Defence and National Security

Germany
Dr Ursula von der Leyen
Federal Minister of Defence

Qatar
Dr Khalid bin Mohammed Al Attiyah
Deputy Prime Minister and Minister of State for Defense Affairs

United Kingdom
Gavin Williamson
Secretary of State for Defence

United States
Richard Spencer
Secretary of the Navy