On 18 September 2025, Ambassador of Angola to China Dalva Maurĺcia Calombo Ringote Allen signed the Convention on the Establishment of the International Organization for Mediation on behalf of the government of Angola in Beijing.

On 18 September 2025, Ambassador of Angola to China Dalva Maurĺcia Calombo Ringote Allen signed the Convention on the Establishment of the International Organization for Mediation on behalf of the government of Angola in Beijing.