Foreign policy’s role in promoting a country’s development is a matter of great importance for understanding its national trajectory, especially in the case of an emerging country. This article aims to analyse lines of action of foreign policy that help emerging countries’ development. In order to do so, it has as its main hypothesis that six lines of action work together towards that goal: (a) trade promotion; (b) investment policy; (c) economic, financial, and commercial negotiations; (d) resource exploration rights; (e) international co-operation; and (f) international projection. To verify their applicability, it analyses the cases of two emerging countries, Brazil and Turkey.