Conclusion 43 The chapters to follow elaborate the empirical evidence for these claims based on a comparison of activism among Libyans, Syrians, and Yemenis in the United States and Britain before and during the Arab Spring. Chapter 2 begins by discussing their emigration histories and contexts of reception in the host-countries. I then explain the weakness of anti-regime voice in the period immediately preceding the Arab Spring, which provides a basis for comparing the effects of the 2011 revolutions on the diaspora mobilization to follow. https://doi.org/10.1017/9781009272148 Published online by Cambridge University Press