Quand peut-on justifier des aides aux exportations ?

At the end of the seventies, the use of export subsidies got widespread, as a mean to protect national producers. But according to the classical analysis of trade policies, they aren't efficient policy tools to reduce the external contraint. Nevertheless, this analysis relies upon three hypotheses: -- two goods model, -- full employment, -- perfect competition. We discuss here whether questionning of these hypotheses enables to justify export subsidies.