After his retirement from the military in 1968, Asghar Khan founded the Tehrik-e-Istiqlal (Solidarity Party) with a secular and centrist political program in direct opposition to the Pakistan Peoples Party (PPP) and the Pakistan Muslim League (PML), but failed to make any significant impact in the 1970 Pakistani general elections. From the 1970s–90s, Khan's political career focused towards the 'Dharna' or 'politics of agitation', against the elected civilian governments, and gained notability when he filed multiple lawsuits, over the Mehrangate bank scandal, against the PPP and the PML(N) at the Supreme Court of Pakistan in the 1990s. During this time, Khan authored many political books, some very critical or given dissenting criticism of the Pakistan Army's involvement in national politics.