In the aftermath of the late-September attack on Nairobi’s Westgate mall by Islamist militants linked to the Somali terrorist group al-Shabab, Kenyan authorities reportedly stepped up arrests of Somalis living in Kenya. In an email interview, Anna Lindley, a lecturer in migration, mobility and development at the School of Oriental and African Studies, University of London, explained where Somali refugees live and the likelihood of their return.

WPR: What are the main concentrations of Somali refugees outside the country, and how long have they been there? ...