About Katelyn Horne

Katelyn Horne is an associate in Washington, DC, and she represents sovereign states in investment treaty arbitrations and other international disputes. She advises clients on a broad range of topics, including investment law, treaty interpretation, the law of the sea, sovereign immunity, and international human rights law. Katelyn also has experience in domestic litigation and international commercial arbitration. Prior to joining Arnold & Porter, she served as an associate legal officer of the International Court of Justice in The Hague. She also previously served in the executive branch of the US government.


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