Telecom spectrum trouble, which had rocked the Congress-led United Progressive Alliance-II regime, has now hit the Bharatiya Janata Party ( BJP). The Central Bureau of Investigation ( CBI) filed a charge sheet on Friday against former telecom secretary Shyamal Ghosh, Bharti Cellular (now Bharti Airtel), Hutchison Max and Sterling Cellular (both now part of Vodafone India)...