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The European Union (EU) integration project is under attack from a reassertion of national sovereignty following Brexit and the Covid-19 crisis. Our analysis examines the impact that traditional forms of sovereignty and national interests will have on the conduct of EU foreign and security policy post-Brexit. We focus on the Brexit challenge to the EU mode of regulation and diplomacy in internal/external policies in Common Foreign and Security Policy, Common Security and Defence Policy, and Justice and Home Affairs. The article also considers key scenarios for future UK-EU security cooperation to inform analysis of likely policy outcomes for the UK and the EU. The article concludes that the EU will have a greater impact through its laws and regulations on the post-Brexit UK than vice versa and that Brexit is not an immediate threat to the EU's regulatory mode of security governance. The new realities of internal/external security governance in Europe post-Brexit will mean weakened EU–UK security arrangements, which will impact the scope and quality of European security cooperation beyond traditional defence. This is both undesirable and potentially dangerous for European security cooperation and for Europe's position in the wider world.

The quest for substance, capability, and strategic autonomy goes on – or does it? Is the objective of CSDP territorial defence and strategic autonomy, or crisis management and softer security concerns like peacekeeping, border management, protection of shipping lanes, and/or cyber security? The Union needs to move beyond familiar complaints about the lack of common strategic culture and EU intrusion into NATO responsibilities. Geostrategic and economic imperatives dictate that the EU should progress CSDP beyond civilian crisis management in the EU Neighbourhood, and military training and security sector reform (SSR). The Strategic Compass must signal CSDP clarity of objectives, coherence, enhanced capability, and appropriate burden sharing with NATO. The response to the Strategic Compass must build European strategic autonomy in ways that strengthen NATO. For military strategic and economic reasons, both the EU and the post-Brexit UK need intensive cooperation to maintain their geostrategic relevance and strengthen the NATO alliance. This paper reflects on prospects for the EU Strategic Compass and offers timely analysis of recent trends in EU foreign and security policy and expresses cautious optimism regarding the enhanced European strategic autonomy/actorness.

The paper presents a study investigating the effects of incorporating novelty detection in automatic text summarisation. Condensing a textual document, automatic text summarisation can reduce the need to refer to the source document. It also offers a means to deliver device-friendly content when accessing information in non-traditional environments. An effective method of summarisation could be to produce a summary that includes only novel information. However, a consequence of focusing exclusively on novel parts may result in a loss of context, which may have an impact on the correct interpretation of the summary, with respect to the source document. In this study we compare two strategies to produce summaries that incorporate novelty in different ways: a constant length summary, which contains only novel sentences, and an incremental summary, containing additional sentences that provide context. The aim is to establish whether a summary that contains only novel sentences provides sufficient basis to determine relevance of a document, or if indeed we need to include additional sentences to provide context. Findings from the study seem to suggest that there is only a minimal difference in performance for the tasks we set our users and that the presence of contextual information is not so important. However, for the case of mobile information access, a summary that contains only novel information does offer benefits, given bandwidth constraints.

In this paper we investigate how information surrogates might be useful in exploratory search and what information it is useful for a surrogate to contain. By comparing assessments based on artificially created information surrogates, we investigate the effect of the source of information, the quality of an information source and the date of information upon the assessment process. We also investigate how varying levels of topical knowledge, assessor confidence and prior expectation affect the assessment of information surrogates. We show that both types of contextual information affect how the information surrogates are judged and what actions are performed as a result of the surrogates.

In this paper we investigate the consistency of answer assessment in a complex question answering task examining features of assessor consistency, types of answers and question type.