A fleet of underwater drones, gleaming and ready for action, is lined up along the wall. Nearby, a small armoury of brightly coloured, 3D-printed guns is displayed on a side table. A robot dog, named Inno, lies prone on the floor, waiting to be activated.In the leafy Singapore suburb of Tanglin, over the road from the British High Commission and the US embassy, and a block away from the Botanic Gardens, Interpol’s innovation centre is where law enforcement officers from around the world come to ...