Chief Minister HD Kumaraswamy today took oath against the backdrop of Karnataka's imposing Vidhan Soudha in the presence of more than a dozen non-BJP leaders from across the country. Mr Kumaraswamy, who had patched up with the Congress at the last minute last week to block the BJP, had been keen to turn the event into a springboard for opposition unity that his party, Janata Dal Secular hopes, would hold till next year's Lok Sabha elections. Sonia Gandhi and son Rahul Gandhi, who were seen to have bent backwards to give Mr Kumaraswamy the lead role in the government, were there. So chief ministers Mamata Banerjee, Arvind Kejriwal and Chandrababu Naidu along with Samajwadi Party's Mayawati and Akhilesh Yadav.