In 2001 Tanzania and the Netherlands signed a treaty only known to a few; a so-called Bilateral Investment Treaty aimed "to extend and intensify the economic relations between them and to stimulate the flow of capital and technology and the economic development of the Contracting Parties". But signing the treaty was in fact mainly a symbolic act which since then has had little if any effect in this respect. In fact, a report by the Netherlands Bureau for Economic Policy Analysis found that BITs have no positive effect on investment in low and lower middle income countries located in Latin America and Sub-Saharan Africa, including Tanzania.
The Barro Blanco dam project in Panama, which has Dutch financial support, is causing indigenous lands to disappear under water. Both ENDS is working to protect the rights of indigenous communities living near the dam.