Eight opposition parties have written to the Prime Minister alleging that the central probe agencies are deliberately targeting them. This has come to the fore amid the ongoing political war over the arrest of Aam Aadmi Party leader Manish Sisodia. Signatories to the letter include leaders from the BRS, NCP, Samajwadi Party and others – but the Congress is notably absent. While the letter aims to put political threats under the lens, can the BJP use the argument of the fight against corruption to its advantage?