I can think of no finer act of citizenship than students exposing the government's failure to control the arms trade. Mark Thomas puts the arms trade under the spotlight in this special edition of Dispatches, asking how easy it is to broker arms. Working his way through a spider's web of vast and, in some cases, archaic legislation, Thomas unearths a series of dangerous loopholes, inconsistencies and, even more shocking, simple omissions that would have the most avaricious arms broker salivating with glee.