by Veronique POUJOL LUXEMBOURG,Luxembourg (AFP) — Three Frenchmen went on trial in Luxembourg on Tuesday accused of an “incredible” document leak that exposed huge tax breaks for major global companies, in an issue brought sharply into focus by the Panama Papers scandal. Antoine Deltour and Raphael Halet, two former employees at services firm PricewaterhouseCoopers (PwC), and French journalist Edouard Perrin face charges over the theft of thousands of confidential files in the so-called LuxLeaks scandal. […]