BERLIN — The head of German arms maker Rheinmetall, Armin Papperger, drew scorn from Ukrainian officials and defense industry figures over the weekend after making dismissive comments about the country’s drone program. In an interview with The Atlantic published March 27, Papperger dismissed Ukraine’s drone sector as lacking real technological breakthroughs. “This is how to play with Legos,” he said, before questioning: “What is the innovation of Ukraine?” He added that “they don’t have some