By Will Cooling Can we sit calmly when there are 12,000 nuclear warheads in the world? Will Cooling reflects on the continued possibility of nuclear war Last night, BBC4 took us back to the mid-eighties with a special repeat screening of Threads to mark 40 years since the seminal drama was released to international acclaim. Set in a then contemporary Sheffield, it seeks to demonstrate what the impact of nuclear war would be on ordinary people. With a bluntness that is as unflinching as it is unnerving, the drama depicts a world where nuclear war has set living standards back centuries. Initial…