In this issue: German firm fails to pass jurisdictional hurdle in claim against Argentina; decision provokes questions about the scope and applicability of MFN Protection; Argentina takes the offensive as Siemens admits to corruption; Peru wins dispute with American energy firm over the scope of a stabilization agreement; El Salvador warned of CAFTA-DR lawsuit by mining company; Merits of investor-state arbitration debated at international arbitration seminar hosted by Ecuador’s Attorney General; Tribunal rejects Ecuador’s jurisdictional objections in dispute with Chevron