I t’s rare for a remark from a corporate executive to spark a debate about national security, cause a rift between strategic allies, and inspire people to create a bunch of memes. But my conversation with Armin Papperger, the CEO of Germany’s biggest arms manufacturer, Rheinmetall, managed to do all three. In my interview with Papperger, he dismissed the work of Ukrainian drone makers as child’s play. “This is how to play with Legos,” he said. “It’s Ukrainian housewives. They have 3-D printers