MOSCOW : A small independent Russian teachers' union is urging members not to be coerced into accepting shots of the "Sputnik V" coronavirus vaccine which is to be mandatory for military personnel.Moscow clinics last week began receiving supplies of the vaccine, which has been approved for use inside Russia even though the final Phase III tests, involving 40,000 people, began only last Wednesday.From September, doctors and teachers will be among the first to be offered the jab on a voluntary basis, officials have said, an arrangement President Vladimir Putin has said he supports.Defence Minister Sergei Shoigu has said shots of the vaccine will be made mandatory for military personnel.With Russian schools re-opening on Sept.