The Bharatiya Janata Party has spent much of the last two years pressing allegations of graft against the Indian government, run by the Congress party. On Tuesday, the BJP was gifted another beating stick. Giuseppe Orsi, the chief executive of Finmeccanica SpA, FNC.MI -8.19% was arrested Tuesday by Italian authorities on suspicion the company may have paid bribes in India to clinch a 560 million euro ($750 million) 12-helicopter deal in 2010.