WHAT purpose have the interrogations of those accused of  having committed international crimes during Bangladesh's war of independence in 1971 served?  Last month, after seeking the permission of the International Crimes Tribunal, the ICT investigation agency completed one-day interrogations of Motiur Rahman Nizami, Ali Ahsan Muhammad Mojahid, Delwar Hossain Sayedee and Salauddin Quader Chowdhury.  And last Wednesday the investigation agency again successfully applied to question Mohammad Kamaruzzaman and Abdul Quader Molla, interrogations which are likely  to take place in the next few weeks.  Ten months ago, the law minister did not think that …