A Missouri man who used the cryptocurrency bitcoin to try to buy a highly lethal chemical weapon that could kill 300 people told the would-be seller, “I plan to use it soon,” federal authorities said Tuesday. Writings found in the Columbia home of the man, Jason William Siesser, “articulated Siesser’s heartache, anger and resentment over a breakup, and a desire for the person who caused the heartache to die,” the Justice Department said in a press release. Siesser, 46, was sentenced to 12 years in prison on Tuesday after pleading guilty in August to attempting to acquire that weapon and to aggravated identity theft. ... (full story)