Three men accused of plotting to make chemical weapons after the discovery of the deadly poison ricin in a north London flat last month made a brief appearance in a London court Wednesday. Rabah Kadre, 35, Mouloud Sihali, 26 and David Aissa Khalef, 20 appeared at the Bow St. Magistrates Court charged with conspiring with others to develop or produce a chemical weapon. They were remanded in custody for a further hearing on March 2. In January, police discovered traces of ricin — one of the world’s deadliest poisons — in a tiny flat about a pharmacy in Wood Green, north London. The poison, developed during World War II by the United States and its allies, has a long history of use in espionage, but experts say it is hard to use as a mass murder agent. The raid was one of several carried out by anti-terror police around the country since November which have resulted in dozens of arrests — most involving men of north African origin. Full Story