The political stalemate in Delhi seemed set to prolong as Aam Aadmi Party chief Arvind Kejriwal Saturday asked the Congress and the BJP to clarify their stand on 18 issues before AAP could consider forming a government with either's support.the 18 issues, listed in letters Kejriwal wrote to Congress chief Sonia Gandhi and her BJP counterpart Rajnath Singh, include not allowing red beacons on vehicles of VIPs, passing the version of the Lokpal Bill promised to Anna Hazare in 2011, halving power rates, opposition to FDI in retail and a special force for security of women.