Prime Minister Syed Yousuf Raza Gilani on Thursday affirmed that the state wants enforcement of its rule at all cost adding that government has kept other options open if its writ was challenged in troubled areas, reports said. Talking to newsmen here in the cabinet block, the PM said that Swat peace deal was reached to value the aspirations and the mandate of Public, saying stern action would be taken if insurgent elements wanted to sabotage peace in the valley and enhanced Talibanization. We will not allow any one to establish parallel government in any region, he said. PM said that the constitution of Pakistan is supreme and all the institutions are working under it.