The death by barbell of disgraced UN official John Ashe could become a bigger obsession for conspiracy theorists than Vince Foster’s 1993 suicide. Ashe — who was facing trial for tax fraud — died Wednesday afternoon in his house in Westchester County. The UN said he’d had a heart attack. But the local Dobbs Ferry police said Thursday that his throat had been crushed, presumably by a barbell he dropped while pumping iron. Ashe was due in court Monday with his Chinese businessman co-defendant Ng Lap Seng, who is charged with smuggling $4.5 million into the US since 2013 and...