NEW DELHI  - India’s two elite intelligence agencies, Intelligence Bureau (IB) and Research & Analysis Wing (RAW) had their new chiefs in office on Tuesday with Syed Asif Ibrahim and Alok Joshi, respectively, taking over the mantle for a fixed tenure of two years.Ibrahim (59) is the first Muslim to lead the IB, the internal intelligence agency of the country. A 1977-batch IPS officer of Madhya Pradesh cadre, Ibrahim was appointed as OSD in the agency last month. He took over from Nehchal Sandhu.Joshi, who took over as RAW (country’s external intelligence agency) chief, is a 1976-batch officer of Haryana cadre. He had served as Special Secretary in the agency. He had earlier served in the IB as well.