Exchange Rate Crisis Models: A Summary Focusing on the 1992-1993 French franc Crisis by Olivier Jeanne The purpose of this article is to provide a summary presentation and comparison of the exchange rate crisis mechanisms posited by economic theory; to identify the assumptions suggested by these mechanisms as to the origin of the 1992-1993 French franc crisis; and to compare them with the "stylised facts". We distinguish two theoretical approaches: speculative attack models and the "opt-out clause" approach. The speculative attack models focus the analysis on the phenomenon of the drain on exchange reserves when crises occur. The opt-out clause approach looks more at the reasons why monetary authorities choose to defend or not defend the ...