With Trump wavering on Nato and war in Ukraine, Europe is scrambling to spend billions on weapons such as dronesIn a small workshop in England’s East Midlands, engineers at the British startup Skycutter are designing weapons for Ukraine. A row of 3D printers make the fuselage for interceptor drones, while parts such as motors and navigation chips are slotted together by hand. The same process happens hundreds of thousands of times a month in partner Ukrainian factories.The swarms of cheap, deadl...