From the missiles over the Middle East to the milk on your kitchen table, the true cost of modern warfare is about to be baked in to the British weekly shop. Experts are warning that few products on our supermarket shelves will be safe as food itself becomes the latest weapon in a global conflict - leaving the UK extremely vulnerable due to our heavy reliance on imports . Even if a tentative ceasefire holds, the average British family - who spends £100 a week - is already braced to fork out an