Fietta LLP is the world’s pre-eminent public international law (PIL) firm, with a leading practice in both State-to-State disputes and investor-State dispute settlement (ISDS). We have been engaged in many of the world’s most sensitive, complex and high-profile PIL disputes and won multiple landmark victories on behalf of our sovereign, corporate and individual clients.

We are unique because we are specialists operating at the pinnacle of all PIL practice areas.  We act in ICJ proceedings (contentious and advisory), international arbitrations, mediations and negotiations, across issues as diverse as territorial disputes, the law of the sea, international investment law, environmental law, water law, international humanitarian law and human rights (including genocide, war crimes and crimes against humanity).

We are top-ranked in the Chambers and Legal 500 directories.  Our lawyers combine previous experience at elite global firms with work in government, international organisations, academia and international tribunals.  Our founder, Stephen Fietta KC, has been a pioneer in PIL and ISDS practice for more than 25 years, while our other partners are also widely recognised as leaders in the field.

To learn more about what we do, click here.