A disproportionate assets case against Mulayam Singh Yadav is a major source of friction between the two sides. NDTV has learnt that after many flip flops and nearly two years after clearly saying that there was a strong case against the SP chief, the CBI is now ready to do another u-turn. This time saying that they made a mistake with the numbers turns out there is no case against Mulayam. Is it coincidence or is the CBI being used as a political tool?