Born acted as lead counsel in the Abyei Arbitration, conducted under the auspices of the Permanent Court of Arbitration in the Hague at the Peace Palace. He represented the &lt;a href="Sudan%20People%27s%20Liberation%20Movement/Army"&gt;Sudan People's Liberation Movement/Army&lt;/a&gt; ("SPLM/A") in the arbitration, implementing the 2005 Comprehensive Peace Agreement, between the Government of Sudan and SPLM/A. The Abyei Arbitration had its oral hearings being open to the public and web-cast live around the world. Born’s closing submissions in the Arbitration and the Tribunal Award can be viewed on the PCA’s website. Born represented the State of Eritrea against Yemen in an arbitration under PCA auspices concerning territorial sovereignty over a number of islands in the Red Sea. Born also represented Greenpeace in an arbitration against the Republic of France, concerning the Rainbow Warrior incident. The arbitration concluded with an award of damages in favor of Greenpeace.