A&O Shearman

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Counting both sovereign states and blue-chip corporations among its impressive roster of clients, A&O Shearman’s public international law team regularly handles treaty accession work, sanctions issues, and issues regarding climate change and the Law of the Sea. Contentious investment treaty work, particularly those under the Energy Charter Treaty, constitutes a key pillar of work for the team; David Herlihy, who splits his time between London and Ireland, is a key contact here. Mark Levy KC heads the team and is regularly instructed on investor-State cases, while Guled Yusuf has a focus on disputes in the energy, mining, and infrastructure sectors, as well as ITLOS, WTO, and ICJ proceedings. Katrina Limond, a public international law specialist, is another key individual.
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Key clients

  • Republic of Djibouti
  • Federal Republic of Somalia

Work highlights

Acted on behalf of the Republic of Djibouti before the International Tribunal for the Law of the Sea in Hamburg, in advisory proceedings concerning the obligations of States in respect of climate change, as well as advising Djibouti on its strategy for engagement with the International Court of Justice.