Killer drones pioneered in Ukraine are the weapons of the future

PRECISION-GUIDED weapons first appeared in their modern form on the battlefield in Vietnam a little over 50 years ago. As armed forces have strived ever since for accuracy and destructiveness, the cost of such weapons has soared. America’s gps-guided artillery shells cost $100,000 a time. Because smart weapons are expensive, they are scarce. That is why European countries ran out of them in Libya in 2011. Israel, more eager to conserve its stockpiles than avoid collateral damage, has rained dumb bombs on Gaza. What, though, if you could combine precision and abundance?