Hanover: Defence and security-related firms for the first time have their own section at the world's top industrial fair in Hanover this week -- a sign of the times as Germany embarks on a massive rearmament drive.Russia's invasion of Ukraine has rattled NATO and led Berlin to pour huge amounts into rebuilding its armed forces, sparking a business bonanza for weapons makers and manufacturers of dual-use goods.The Hanover Industrial Fair, focused on mechanical and electrical engineering and digital industries, still bars outright weapons technology, but this year it featured a Bundeswehr armed forces stand with a camouflage-painted helicopter and an...