Analyst weighs whether the UK can block IS teen's return The UK has no legal way of preventing the return home of a pregnant British teenager who joined the Islamic State group in Syria, says Emily Winterbotham, Senior Research Fellow at RUSI. The case of Shamima Begum, who ran away from London with two school friends in 2015, has highlighted the challenge for Western governments on how to deal with returning jihadist supporters. IMAGES AND SOUNDBITES of analyst