Aam Aadmi Party (AAP) supremo and Delhi Chief Minister Arvind Kejriwal has launched an apology spree to put an end to the defamation cases against him. After saying sorry to former Punjab minister Bikram Singh Majithia, he has so far apologised to Congress leader Kapil Sibal's son Amit Sibal and Union minister and Bharatiya Janata Party (BJP) leader Nitin Gadkari for making unverified allegations of corruption against them. Days earlier, Kejriwal had conceded to Majithia that his allegations of the latter being involved in drug trade were unsubstantiated. The apology spree could also mark the end of AAP's combative and