This article provides an overview of Ecuador`s approach to foreign policy over the past decade, which has undergone significant changes. It also looks at the latest constitutional developments that could enable Ecuador to develop a more coherent approach to new investment and trade agreements. However, this concern has also been challenged on the basis of two arguments. First, the assumption that the IIA will increase the inflow of foreign direct investment into many countries, including Indonesia, is empirically controversial. Therefore, the existence of such clauses should not be correlated with foreign direct investment. Second, public policy clauses may be formulated in such a way as to prevent their arbitrary appeal. The real challenge would then be to design such clauses in order to define legitimate rules for the activities of foreign investors, without allowing them to benefit from inappropriate or unjustified treatment. Statistics show the rapid expansion of CEWs over the past two decades. By the end of 2007, the total number of AIIs had already exceeded 5500 and increasingly included the conclusion of PDOs with a focus on investment issues. As the types and contents of IIAs are increasingly diverse and almost all countries are involved in the conclusion of new A.A., the global IIA system has become extremely complex and difficult to pin down.