SEEREN2 aims at creating the next generation of the southeast European segment of GEANT, that intends to make leading-edge technologies and services available to the entire Research and Education communities and all scientific sectors without discrimination between users and sites in southeast Europe in an attempt to further ease the 'digital divide' that still separates most of the SE European countries from the rest of the continent. The central element of this infrastructure is the SE European R&E backbone network that extends, through the participating NRENs, to the end-users in all participating countries. With respect to its predecessor (SEEREN), the infrastructure will be substantially enhanced in its performance but more significantly will add a new key item to its fundamental characteristic, the consolidation of the networking and Grid infrastructures, into an eInfrastructure for SE Europe, fully integrated with the pan-European efforts (GEANT2, EGEE, SEE-GRID etc).