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The greatest challenge for the EU in trying to identify an optimal response is understanding the motives behind the US strategy. The rhetoric, and more recently also actions, of the current US administration on trade and the global multilateral system are a real threat to the process of globalisation. While the costs are not immediate, they will materialise and they will be hard to revert.

The emerging data traffic demand has caused a massive deployment of network infrastructure, including Base Stations (BSs) and Small Cells (SCs), leading to increased energy consumption and expenditures. However, the network underutilization during low traffic periods enables the Mobile Network Operators (MNOs) to save energy by having their traffic served by third party SCs, thus being able to switch off their BSs. In this paper, we propose a novel market approach to foster the opportunistic utilization of the unexploited SCs capacity, where the MNOs, instead of requesting the maximum capacity to meet their highest traffic expectations, offer a set of bids requesting different resources from the third party SCs at lower costs. Motivated by the conflicting financial interests of the MNOs and the third party, the restricted capacity of the SCs that is not adequate to carry the whole traffic in multi-operator scenarios, and the necessity for energy efficient solutions, we introduce a combinatorial auction framework, which includes i) a bidding strategy, ii) a resource allocation scheme, and iii) a pricing rule. We propose a multiobjective framework as an energy and cost efficient solution for the resource allocation problem, and we provide extensive analytical and experimental results to estimate the potential energy and cost savings that can be achieved. In addition, we investigate the conditions under which the MNOs and the third party companies should take part in the proposed auction. ; Grant numbers : This work was supported in part by the Research Projects AGAUR the Catalan Government (2014-SGR-1551) CellFive (TEC2014-60130-P).© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

The international community recently adopted the Sustainable Development Goals (SDGs). Achieving these goals by 2030 will require major commitments and efforts. It will also require cooperation between multiple groups and stakeholders, both nationally and internationally. An interesting question is whether religious diversity and the evocation of religion tend to be conducive to "social cooperation" between individuals from various religious traditions. We refer here to social cooperation in a fairly broad sense, but we focus in this paper on specific measures of altruism and trustworthiness between individuals of various different religious affiliations.