Inter-Tribal Diplomacy & Regional Alliances: Sovereign Treaties Across The Southwest

1. The Sovereign Architecture of Inter-Tribal Diplomacy

Far from existing as isolated, hostile bands, the seventeen classical subnations of the Bibbullmun Sovereign Nation operated within an intricate, institutionalised network of inter-tribal diplomacy.^[1] International relations across south-western Australia were governed by customary international law (Wandjoo Jurisprudence), which established formal diplomatic immunities, codified treaty negotiation procedures, and regulated multilateral regional assemblies.^[2] Sovereign diplomatic missions were dispatched regularly to settle border disputes, arrange exogamous marriage treaties, negotiate resource extraction rights, and coordinate collective ceremonial assemblies.^[3]

2. Diplomatic Heralds and Messenger Sticks (Borndok)

The operational machinery of diplomacy was entrusted to accredited diplomatic heralds, known as Koornding.^[4] Heralds were typically mature initiated men who possessed multilingual fluency, exceptional oratorical diplomacy, and extensive kinship connections across foreign territories.^[5] Heralds enjoyed absolute diplomatic immunity under customary international law: harming or killing an accredited herald was regarded as an international war crime that united neighboring clans in immediate punitive coalitions.^[6] Heralds carried carved wooden messenger sticks (Borndok), incised with standardized geometric notches and symbols that authenticated their diplomatic credentials and encoded the specific agenda of the proposed treaty council.^[7]

3. Multi-Tribal Treaty Assemblies (Boonaroo Gatherings)

Large-scale multilateral diplomacy culminated in the great seasonal assemblies, such as the famous Boonaroo gatherings held during the late summer (Bunuru).^[8] Hundreds of delegates from across the southwest converged on designated neutral treaty grounds—such as the Mandurah estuarine flats, Heirisson Island (Matagarup), or King George Sound.^[9] During these weeks-long assemblies, all regional hostilities were strictly suspended under religious truces. Delegations conducted formal trade fairs exchanging prized goods, celebrated massive mortuary and initiation ceremonies, and convened sovereign councils of elders to arbitrate boundary conflicts and renew reciprocal alliance treaties.^[10]

4. Sovereign Precedent for Modern First Nations Treaties

The existence of this sophisticated pre-colonial diplomatic infrastructure dismantles the settler colonial narrative that Aboriginal Australians lacked sovereign capacity to negotiate formal treaties.^[11] The Bibbullmun nation has conducted international diplomacy for millennia. Contemporary treaty negotiations with the Western Australian state government must be grounded in this inherent diplomatic heritage, treating Bibbullmun elders not as statutory welfare clients, but as sovereign plenipotentiaries representing an unvanquished nation.^[12]