Basically, they have the technology to make tiny working wings and little crawling legs. What they don’t have yet are stabilizing programs that allow the robo-bugs to right themselves if wind or other obstacles knock them off balance, nor do they have tiny weapons for them to wield yet.
But do we need them? Like, if we could just send a few millipedes to crawl up Kim Jong Un’s pant legs when he’s making a speech and tickle him till he pisses himself, wouldn’t that be enough? I think maybe that’s what The Interview could have used.