If each of the UK’s 28 million households lent £1,000 to the government, that would raise £28bn – the exact sum cited as the current defence budget shortfall. But there’s a good reason why Britons won’t take kindly to being asked to cough up for another destroyer, says Sean O’Grady H ow will we pay for the next war ? This is a question that deserves rather more serious attention than it currently receives. And yet, at the moment, arguments over whether Sir Winston Churchill should be replaced