Add Yahoo as a preferred source to see more of our stories on Google. The first Ukrainian drone production factory started operations in Suffolk on Wednesday in a boost for Britain's defence industry.

The drones traveled nearly 1,100 miles across Ukraine's border into Russia. Ukrainian long-range drones struck an oil refinery nearly 1,100 miles into Russia, marking one of Kyiv's deepest strikes of the war, a security official told Business Insider on Thursday.