Nails and nail varnish: Brussels bombers prepared a 'satanic' cocktail

By Robin Emmott BRUSSELS (Reuters) - An empty apartment block on a quiet street turned out to be the perfect place for the three suspected Brussels attackers to prepare the home-made nail bombs used in Tuesday's airport and metro attacks that killed at least 31 people. In a building undergoing renovation, there were no near neighbors to notice them taking in large quantities of strong-smelling household chemicals, as well as a suitcase of nails, to concoct an unstable white explosive powder know