Luxembourg is third most open to cross-border trade and investment flows, according to the KOF Swiss Economic Institute. Pictured: Freight is loaded on a Cargolux plane at Findel airport on 13 October 2011. Frédéric Humblet

Luxembourg is third most open to cross-border trade and investment flows, according to the KOF Swiss Economic Institute. Pictured: Freight is loaded on a Cargolux plane at Findel airport on 13 October 2011. Frédéric Humblet