Chennai, Feb. 28 -- Three-time former Tamil Nadu chief minister and senior All India Anna Dravida Munnetra Kazhagam (AIADMK) leader, O Panneerselvam, 75, joined the ruling Dravida Munnetra Kazhagam in the presence of its president and state chief minister M K Stalin on Friday, after doors were closed for him in the AIADMK-led National Democratic Alliance (NDA). Panneerselvam, popularly known as OPS and once a trusted confidant of late AIADMK supremo J Jayalalithaa, was expelled from the party in 2022 by his arch rival and present AIADMK head Edappadi K Palaniswami. After failing to take control of the party through a long legal battle, Panneerselvam tried to rejoin the AIADMK with the help of Bharatiya Janata Party that anchors the NDA alliance in Tamil Nadu. However, Palaniswami refused to make room for OPS even though he was more accommodating with the AMMK's TTV Dhinakaran. The AMMK joined the NDA alliance in the state in January. Speaking to reporters, Panneerselvam expressed happiness in joining the DMK and hit out at Palaniswami as an "autocrat". "The decision I've taken is my own, to end a bitter experience for me. I thank CM and DMK President Stalin for accepting me. EPS is behaving as a dictator and he has created a situation where AIADMK cannot win," Panneerselvam told media persons. M.K. Stalin welcomed Panneerselvam saying the latter has joined the mother organisation , a reference to the AIADMK's provenance (a splinter group of the DMK in 1972)....