Beyond the valley of the poison suicide vests of death...

Analysis Shall we do chemical weaponry? Given that at time of writing the Metropolitan Police was conducting a "fingertip search" of a London house for a home-made chemical weapon, it somehow seems appropriate to reality-check the practicalities of such devices. The Met, incidentally, deployed 250 officers and a five mile air exclusion zone to arrest two people at the house, in Forest Gate, London, and in a statement afterwards, Deputy Assistant Commissioner Peter Clarke said that the raid was in response to "very specific" intelligence. This was "such that it demanded an intensive investigation and response." Later, however, sources were quoted as saying there were "questions about the reliability of the informant" - these two positions do not necessarily sit well together.?