ISLAMABAD - Pakistan Muslim League-N (PML-N) Quaid and former prime minister Nawaz Sharif Thursday rejected assertions of the US Assistant Secretary of State Richard Boucher that Pakistan should focus on food prices and militancy rather than the fate of President Pervez Musharraf. "What Pakistan has to do with its president, who is an unconstitutional president, this is Pakistan's internal affair and we do not need any external consultation in this regard," Nawaz Sharif told reporters before his departure for London at Islamabad Airport. He has left for London to see his wife, Kulsoom Nawaz, who is recuperating after recent surgery. Referring to his recent meeting with Richard Boucher, Nawaz Sharif said that he had told him that Pakistan's internal affairs have to be managed by the government without any outside interference. Talking of the ongoing operation in Khyber Agency and recent increase in oil and gas prices, the former prime minister said that all important issues should be discussed in the Parliament and government had not consulted his party, PML-N, a major partner in the ruling coalition, before taking decisions on the operation in Khyber Agency and raise in petroleum and gas prices. He said that two and half months back, the coalition partners had agreed to adopt a policy of dialogue in the tribal areas during a high-level meeting of party leaders. He said that he did not know what was behind the change of the approach. Talking of the restoration of the deposed judges, Nawaz expressed his dismay and recalled that he and PPP leader Asif Ali Zardari had made a solemn public commitment to restore the judges. "If commitments are not fulfilled at this level, then at what level will the commitments be fulfilled?" he posed a question. When he was asked why his party still supporting the government, he said that PML-N supports the PPP-led government so that the country could get rid of the vestiges of dictatorship. "We have to restore the 1973 Constitution. We have to restore rule of law and we have to make Parliament sovereign," he said, while adding that Parliament was not acting in actual practice as a sovereign institution. The PML-N leader also said he had impressed upon the PPP Co-Chairman to give top priority to resolving the judges' issue. He further said that his party had made a "sacrifice" by withdrawing its ministers from the federal cabinet for larger national cause, the restoration of the deposed judges. Replying to a question about the lawyers' plan to hold another long march for which schedule is yet to be announced, Nawaz said that his party would continue supporting lawyers' movement.