When conducting secret negotiations, make sure both sides are entirely clear about what they can disclosure. Do the arm twisting up front. Then again, maybe it was simply posturing on the other side but what could he gain by backtracking? From UPI: Paracha Changes Story on Hughes Meeting:
Paracha initially confirmed that he met last Friday with U.S. State Department Under-Secretary for Public Diplomacy and Public Affairs Karen Hughes and U.S. military officials at Islamabad’s Serena Hotel, according to GEO Pakistan News. The Daily Times reported that following a telephone call from "American officials in Islamabad," Paracha subsequently changed his account of what transpired and said, "I met U.S. businessmen who were visiting Pakistan in connection to the Oct. 8 earthquake. "There was no U.S. government official at the meeting. I was told was that U.S. Undersecretary of State for Public Diplomacy and Public Affairs Karen Hughes was also staying at the same hotel. I did not meet her, but saw her from close."