NEW DELHI, DECEMBER 19: Janata Party president Subramaniam Swamy on Sunday offered to cooperate with former Uttar Pradesh chief minister Kalyan Singh to "uproot the RSS-controlled BJP"."If Kalyan Singh concentrates on uprooting the RSS controlled BJP, I will offer my cooperation to him," Swamy said in a statement here. Time has come again to form an anti-BJP formation to expose the RSS and ultimately dislodge the BJP-led coalition at the Centre, he said, adding Singh should join in this endeavour.