Toronto, May 13 -- Tahawwur Hussain Rana, among the principal figures behind the 26/11 terror attacks in Mumbai, has been convicted of terrorism-related charges and extradited to India from the US, but the Canadian Government is struggling to revoke his citizenship. Among the reasons for the delay are changes in citizenship legislation under former Prime Minister Justin Trudeau in 2016 which removed terrorism as a cause for such action.P7...