On Wednesday 10 December 2025, the Governor-General, Her Excellency the Honourable Ms Sam Mostyn AC, conducted a tri-lateral video call with Her Excellency the Right Honourable Mary Simon, Governor-General of Canada, and Her Excellency the Right Honourable Dame Cindy Kiro, Governor-General of New Zealand.

Then, at Government House, Canberra, the Governor-General met students and teachers from Lumen Christi College, Martin, Western Australia, as they undertook a tour of Government House.

Afterwards, the Governor-General, received Letters of Credence, accrediting His Excellency Mr Abdul Kareem Toma Mehdi Kaab as the Ambassador of Iraq. The Ambassador was accompanied by Mr Yarub Al-Anpaqi, and Mr Raeed Duraid Hassen Al-Fadhli, Counsellors, Embassy of Iraq. 

Later, the Governor-General, received Letters of Credence accrediting Her Excellency Ms Monika Tomašovicová as the Ambassador of the Slovak Republic. The Ambassador was accompanied by her spouse, Mr Mojmir Tomašovič, and Mrs Michaela Sulakova, Third Secretary, Embassy of the Slovak Republic. 

Then, the Governor-General, received Letters of Credence accrediting Her Excellency Mrs Mirna Khawly as the Ambassador of Lebanon. The Ambassador was accompanied by her spouse, Mr Abdel Khalek Ghassan.

Afterwards, the Governor-General, received Letters of Credence accrediting Her Excellency Ms Gilma Moreira Lino as the Ambassador of Cuba. The Ambassador was accompanied by Mrs Ivianes Danay Gonzales Llanes, Third Secretary, and Mr Fabian Rodriguez Moreira, Attache, Embassy of Cuba. 

In the afternoon, the Governor-General, received Letters of Credence accrediting Her Excellency Ms Doris Adzo Denyo Brese as the High Commissioner of the Republic of Ghana. The High Commissioner was accompanied by Mrs Betty Osafo Mensah, Minister, Mr Joseph Okai, Minister, and Mr Stanley Famiah, Minister-Counsellor, Ghana High Commission. 

Then, the Governor-General hosted a lunch for newly accredited Heads of Missions. Guests included: Her Excellency Ms Betty Bernardica Pavelich, representing the Dean of the Diplomatic Corps and Ambassador of Croatia; His Excellency Mr Abdul Kareem Toma Mehdi Kaab, Ambassador of Iraq and Mr Yarub Al-Anpaqi, Counsellor, Embassy of Iraq; Her Excellency Ms Monika Tomašovicová, Ambassador of the Slovak Republic and her spouse Mr Mojmir Tomašovič; Her Excellency Mrs Mirna Khawly, Ambassador of Lebanon and her spouse Mr Abdel Khalek Ghassan; Her Excellency Ms Gilma Moreira Lino, Ambassador of Cuba and Mr Fabian Rodriguez Moreira, Attache, Embassy of Cuba; Her Excellency Ms Doris Adzo Denyo Brese, High Commissioner of the Republic of Ghana and Mrs Betty Osafo Mensah, Minister, Ghana High Commission; Mr Craig Maclachlan, representing the Foreign Minister, and Mr Jonathan Muir, Chief of Protocol, Department of Foreign Affairs and Trade.

Afterwards, the Governor-General recorded a Christmas video message for the Australian Refugee Association. 

Later, the Governor-General received Her Excellency Ms Rosemary Morris-Castico, Australian Ambassador to Spain.

Then, the Governor-General received His Excellency Mr Andrew Martin, Australian Ambassador to Chile.

In the evening, at the Canberra Museum and Gallery, the Governor-General, as guest of Dr Victoria Kelly-Clark, Public Diplomacy, Press and Information Advisor, Delegation of the European Union to Australia, attended the exhibition ‘LOVING: Photographs of Men in Love’.