The Three Seas Initiative was founded in 2016 during the first Three Seas Summit in Croatia by 12 European Union member states: Latvia, Austria, Bulgaria, Croatia, Czech Republic, Estonia, Hungary, Lithuania, Poland, Romania, Slovakia and Slovenia.
There have already been six such summits: in Croatia, Poland, Romania, Slovenia, Estonia, and Bulgaria. The 7th, this year’s summit, will take place on 20-21 June in the capital city of Latvia, Riga, the Embassy of the Republic of Latvia in Seoul said on May 16.

The Three Seas Initiative (3SI) is a politically inspired, commercially driven platform for improving connectivity between twelve EU Member States allocated between Baltic, Adriatic and Black seas.
The Three Seas Initiative was born out of a shared interest in developing transport, energy and digital infrastructure connections on the EU’s north-south axis. Connections that must be trusted, sustainable and inclusive thus strengthening EU cohesion and enrich transatlantic links.
3SI aims to scale up region’s excellence EU-wide and globally. 3SI partners – the United States, Germany, and the European Commission – are closely involved in this process.
To improve regions connectivity and accelerate investments in infrastructure projects of the regions 3SI Investment Fund was set up in 2019.