AMERICAN and British troops poised to assault the Taliban stronghold of Marjah have begun targeting insurgent leaders for assassination. Military sources said special forces had been infiltrating the town on “kinetic” missions — jargon for armed attacks. “Special forces guys have been going in on assassination missions with the aim of decapitating the Taliban force,” one said. At the British base of Camp Bastion and the adjoining Camp Leatherneck, the US marine base, troops and munitions have been airlifted in by night to avoid enemy rockets. It is clear that international forces are on the brink of a big battle....