The LHC (Large Hadron Collider) at CERN (Geneva) is a major international project that will become reality in a few months with the very first collisions and data taking. The raison d'être of such a machine is to understand the mechanism of symmetry breaking, to unravel the nature of the vacuum and to probe into the mystery of dark matter, DM, by revealing its microscopic properties.   Although the LHC research program has traditionally centred around the discovery of the Higgs, it has since been clear that the standard description of this particle calls for models of New Physics. Until a few years ago the epitome of this New Physics has been supersymmetry which when endowed with a discrete symmetry furnishes a good dark matter candidate. Recently a few alternative scenarios have been put forward, originally also to solve the Higgs problem but it has been discovered that, generically, their most successful and viable implementation (in accord with electroweak precision data, proton decay) fares far better if a discrete symmetry is embedded. This symmetry is also behind the existence of a possible dark matter candidate.  From another viewpoint, the last few years have witnessed spectacular advances in cosmology and astrophysics confirming that ordinary matter is a minute part of what constitutes the Universe at large.  At the same time that the LHC will be gathering data, a host of non-collider experiments will be carried out in search of DM (AMS, GLAST,HESS, PAMELA, SuperCDMS, Edelweiss,..) or for the determination of the cosmological parameters, with unprecedented level of accuracy, making cosmology enter the era of precision, almost akin of the LEP legacy.

It is high time that our community, at large, grasped and exploited the new opportunities offered by this new paradigm[1].  This will only be possible if a strong cross-border collaboration between astrophysicists and collider physicists, both theorists and experimentalists, comes together and has at its disposal common and complementary precision tools for the analysis of the forthcoming data. The stakes are high.  For example, if  future colliders discover supersymmetric particles and probe their properties, one could predict the dark matter density of the Universe and would  constrain  cosmology with the help of precision data provided by WMAP and PLANCK[1].  It would be highly exciting if the precision reconstruction of the relic density from observables at the colliders does not match PLANCK's determination, this would mean that the  post-inflation era is most probably not entirely radiation dominated[2]. One can also think of many situations where the  same collider data on the microscopic properties of DM when put against a combination of data from direct and indirect detection can give strong constraints on the astrophysical properties of DM such as its space and velocity distribution as well as  clustering (clumps,..),  that may reveal much about galaxy formation[3].  One can also take another perspective. Imagine a situation like what might occur at the LHC with some new particles having been discovered but one is unable to determine the mass of the neutral stable dark matter candidate. An extraction of this mass from a direct detection experiment (from the nuclear recoil energy), backed up perhaps by a fit to the indirect detection experiments, even after allowing for astrophysical uncertainties, can greatly help in further constraining the particle physics model or discriminating between different models. This will directly impact on the phenomenology at the LHC while strengthening and reshaping the strategy for the future e+e- International Linear Collider,  ILC. The core of our project is at the heart of these important issues. These are the kind of global analyses that our team wants to perform within this project once, and while, the needed cross-border tools have been, or are, being developed.