LAHORE   -  The Pakistan Tehreek-e-Insaf (PTI) came to power with a good anti-corruption agenda, but, vindictive politics through NAB and excessive reliance on the establishment led to its failure. These views were expressed by Democratic Party President Jahangir Ashraf Vaince during a media talk here on Saturday. “The Supreme Court of Pakistan is the custodian of the Constitution, and it is hoped that the court will take every possible step to uphold its integrity against any controversy,” he said.