Fietta LLP is one of the world’s leading public international law and international investment disputes practices. We provide sovereign States and private clients globally with specialist legal support and representation, effective advocacy and unwavering commitment. We are trial lawyers with a track record of winning treaty cases. We have won landmark victories in pioneering public international law disputes involving multi-billion dollar foreign investments, territorial disputes, the law of the sea and international environmental law.

Our team is top-ranked in the Chambers and Legal 500 directories. It combines long experience at top global law firms with work in government, academia, international courts and arbitral tribunals, and international organisations. The firm’s principal, Stephen Fietta QC, has been recognised as one of the world’s leading public international law and investment dispute practitioners for more than a decade. Others on our team are also recognised as leading practitioners by global legal directories.

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