Why does Iran arrest so many British 'dual nationals'?

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Special focus on one of the biggest foreign policy problems for the British govt. Thousands of civilians are being evacuated from the Syrian town of Daraya Pioneer of electronic music releases his new album - at the age of 95 And Lord Bell leaves PR firm Bell Pottinger after nearly 30 years. (picture - a couple in Tehran; credit: EPA/ABEDIN TAHERKENAREH).