Toggle open close Launched in 2016, the Three Seas Initiative (3SI) is a valuable project for strengthening trade, infrastructure, energy, and political cooperation among countries bordering the Adriatic Sea, the Baltic Sea, and the Black Sea. A strong, prosperous, and secure Eastern Europe is in America’s interest, and the 3SI plays an important role in making this happen. The 3SI has received strong bipartisan support in the U.S. since its inception, and despite the ongoing COVID-19 pandemic, the initiative has continued to gain momentum over the past year. In 2021, the Biden Administration and Congress should continue to feature the 3SI as a central component of U.S. policy in Europe. The initiative is a force multiplier that bolsters security in Europe and strengthens transatlantic trade ties by marrying private capital with some of the most dynamic and growing economies in Europe, while also helping to stymie Chinese and Russian efforts to make inroads in the region.