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Affecting millions across the globe every day, international migration encompasses a wide range of issues, from individual upheaval to government policy. Examining how migration has been theorized and using empirical examples to explore hot topics, this book shows how migration cuts to the heart of notions of identity, home and belonging.

1. The persisting proliferation dilemma -- 2. Analyzing nuclear proliferation decisions -- 3. South Africa : the apartheid bomb -- 4. India : crossing the Lakshmana Rekha -- 5. Australia : waltzing with atomic Matilda -- 6. Libya : a rogue redeemed? -- 7. Conclusions : perceptions on proliferation.

"This book offers a novel approach to understanding the puzzle of nuclear proliferation by examining how leaders' beliefs and perceptions about the international system influence states' decisions to acquire nuclear weapons. Today, there is a persisting dilemma over the spread of nuclear weapons for both practitioners and scholars of international affairs. Uncertainty remains whether determined proliferators can be stopped, as shown by the cases of North Korea and Iran. These instances of proliferation raise questions about regional stability, the potential use of pre-emptive military action, and the potential for reactive-proliferation by neighbouring countries. Despite the serious implications surrounding the spread of these weapons, proliferation scholarship has thus far failed to solve what has been described as the "proliferation puzzle"--Why do some countries choose nuclear weapons while others do not? The author argues that understanding basic psychological motivations, such as the quest for power or fear of another country, provide answers about a leader's willingness to proliferate. Proliferation willingness is a critical, yet frequently overlooked, part of the proliferation equation. Ultimately, it is the combination of willingness and proliferation opportunity (i.e. technical and scientific capabilities) that determines whether a country 'goes nuclear'. By examining several historical instances of proliferation decision-making--in South Africa, India, Libya and Australia--the book's findings highlight the fundamental role of leaders' beliefs in shaping proliferation outcomes. This book will be of much interest to students of nuclear proliferation, political psychology, security studies and IR in general"--

To further explore the impact of strategic culture on foreign policy, this article examines the development of the "Rogue Doctrine" within US strategic culture following the Cold War. Critics allege that this doctrine constrains strategic choice resulting in aggressive policies toward alleged rogue states. To assess the impact of this security narrative, the operational codes of two US presidents, William J. Clinton and George W. Bush, are examined. Analysis reveals distinct differences between their perceived interactions with rogue and non-rogue states. The resulting interactions manifest the unique nature of US-rogue state interactions as these US leaders possess starkly different images of both rogue others as well as self. In the context of dealing with rogue states, these leaders' perceptions of self undergo major transformations indicating tendencies toward more aggressive tactics and the use of force. Adapted from the source document.

Contributing to an emerging scholarship emphasizing ideational approaches for understanding nuclear proliferation, this work offers a new analytical framework focusing on leaders' perceptions about the international system and how their "perceived strategic context" may influence the decision of "going nuclear." Rather than being an inevitable occurrence driven by abstract systemic factors, like the security dilemma, this actor‐specific, ideational approach offers a narrative depicting the fundamental role played by policy makers' perceptions about the international environment in which their proliferation decisions are made. Utilizing operational code analysis, leaders' unique perceived strategic contexts are identified and expectant strategies for self and other analyzed by using the theory of moves sequential game construct. Initial testing of the framework is performed by examining the debated nuclear proliferation cases of South Africa and India. The results highlight the important role of individuals' views concerning the strategic environment they inhabit when weighing proliferation decisions.

© The Author(s) 2021. There is conflicting evidence on the influence of weather on COVID-19 transmission. Our aim is to estimate weather-dependent signatures in the early phase of the pandemic, while controlling for socio-economic factors and non-pharmaceutical interventions. We identify a modest non-linear association between mean temperature and the effective reproduction number (Re) in 409 cities in 26 countries, with a decrease of 0.087 (95% CI: 0.025; 0.148) for a 10 °C increase. Early interventions have a greater effect on Re with a decrease of 0.285 (95% CI 0.223; 0.347) for a 5th - 95th percentile increase in the government response index. The variation in the effective reproduction number explained by government interventions is 6 times greater than for mean temperature. We find little evidence of meteorological conditions having influenced the early stages of local epidemics and conclude that population behaviour and government interventions are more important drivers of transmission. ; D.R. was supported by a postdoctoral research fellowship of the Xunta de Galicia (Spain). A.G. was funded by the Medical Research Council-UK (Grant ID: MR/R013349/1), the Natural Environment Research Council UK (Grant ID: NE/R009384/1) and the European Union's Horizon 2020 Project Exhaustion (Grant ID: 820655). R.L. was supported by a Royal Society Dorothy Hodgkin Fellowship. S.A. and S.M. were funded by the Wellcome Trust (grant 210758/Z/18/Z210758/Z/18/Z). The following funding sources are acknowledged as providing funding for the MCC Collaborative Research Network authors: J.K. and A.U. were supported by the Czech Science Foundation, project 18-22125S. S.T. was supported by the Shanghai Municipal Science and Technology Commission (Grant 18411951600). N.S. is supported by the NIEHS-funded HERCULES Center (P30ES019776). H.K. was supported by the National Research Foundation of Korea (BK21 Center for Integrative Response to Health Disasters, Graduate School of Public Health, Seoul National University). A.S., F.D.R. and S.R. were funded by the European Union's Horizon 2020 Project Exhaustion (Grant ID: 820655). Each member of the CMMID COVID-19 Working Group contributed to processing, cleaning and interpretation of data, interpreted findings, contributed to the manuscript and approved the work for publication. The following funding sources are acknowledged as providing funding for the CMMID COVID-19 working group authors. This research was partly funded by the Bill & Melinda Gates Foundation (INV-001754: M.Q; INV-003174: K.P., M.J., Y.L., J.L.; NTD Modelling Consortium OPP1184344: C.A.B.P., G.M.; OPP1180644: S.R.P.; OPP1183986: E.S.N.). BMGF (OPP1157270: K.E.A.). DFID/Wellcome Trust (Epidemic Preparedness Coronavirus research programme 221303/Z/20/Z: C.A.B.P.). EDCTP2 (RIA2020EF-2983-CSIGN: H.P.G.). ERC Starting Grant (#757699: M.Q.). This project has received funding from the European Union's Horizon 2020 research and innovation programme—project EpiPose (101003688: K.P., M.J., P.K., R.C.B., W.J.E., Y.L.). This research was partly funded by the Global Challenges Research Fund (GCRF) project 'RECAP' managed through RCUK and ESRC (ES/P010873/1: A.G., C.I.J., T.J.). HDR UK (MR/S003975/1: R.M.E.). MRC (MR/N013638/1: N.R.W.; MR/V027956/1: W.W.). Nakajima Foundation (A.E.). This research was partly funded by the National Institute for Health Research (NIHR) using UK aid from the UK Government to support global health research. The views expressed in this publication are those of the author(s) and not necessarily those of the NIHR or the UK Department of Health and Social Care (16/136/46: B.J.Q.; 16/137/109: B.J.Q., F.Y.S., M.J., Y.L.; Health Protection Research Unit for Immunisation NIHR200929: N.G.D.; Health Protection Research Unit for Modelling Methodology HPRU-2012-10096: T.J.; NIHR200908: R.M.E.; NIHR200929: F.G.S., M.J.; PR-OD-1017-20002: A.R., W.J.E.). Royal Society (Dorothy Hodgkin Fellowship: R.L.; RP\EA\180004: P.K.). UK DHSC/UK Aid/NIHR (PR-OD-1017-20001: H.P.G.). UK MRC (MC_PC_19065—Covid 19: Understanding the dynamics and drivers of the COVID-19 epidemic using real-time outbreak analytics: A.G., N.G.D., R.M.E., S.C., T.J., W.J.E., Y.L.; MR/P014658/1: G.M.K.). Authors of this research receive funding from the UK Public Health Rapid Support Team funded by the United Kingdom Department of Health and Social Care (T.J.). Wellcome Trust (206250/Z/17/Z: A.J.K., T.W.R.; 206471/Z/17/Z: O.B.; 208812/Z/17/Z: S.C.; 210758/Z/18/Z: J.D.M., J.H., N.I.B.; UNS110424: F.K.). No funding (A.M.F., A.S., C.J.V.-A., D.C.T., J.W., K.E.A., Y.-W.D.C.). LSHTM, DHSC/UKRI COVID-19 Rapid Response Initiative (MR/V028456/1: Y.L.). Innovation Fund of the Joint Federal Committee (01VSF18015: F.K.). Foreign, Commonwealth and Development Office/Wellcome Trust (221303/Z/20/Z: M.K.).

Abstract There is conflicting evidence on the influence of weather on COVID-19 transmission. Our aim is to estimate weather-dependent signatures in the early phase of the pandemic, while controlling for socio-economic factors and non-pharmaceutical interventions. We identify a modest non-linear association between mean temperature and the effective reproduction number (Re) in 409 cities in 26 countries, with a decrease of 0.087 (95% CI: 0.025; 0.148) for a 10 °C increase. Early interventions have a greater effect on Re with a decrease of 0.285 (95% CI 0.223; 0.347) for a 5th-95th percentile increase in the government response index. The variation in the effective reproduction number explained by government interventions is 6 times greater than for mean temperature. We find little evidence of meteorological conditions having influenced the early stages of local epidemics and conclude that population behaviour and government interventions are more important drivers of transmission.