Since the start of Russia’s full-scale invasion, Ukraine has heavily relied on its partners in order to sustain its war effort. Of all the countries, the United States has been the single biggest provider of military aid to Ukraine. But now, crucial funding is being held up in Congress. In response, Ukraine is doing what it can to become more self-reliant. A big part of that effort is the production of drones, including people building them in their homes. The World’s Daniel Ofman reports from Kyiv.