LONDON/ISLAMABAD - Prime Minister Yousuf Raza Gilani has said that it is in the interest of Pakistan to curb extremism and terrorism and we are fighting our own war. Talking to journalists at Heathrow Airport, he said, "The fight against extremism and terrorism is Pakistan's own cause." The Prime Minister said he would inform US Secretary of State Condoleeza Rice during his meeting with her that Pakistan is fighting terror war for peace in the entire world. He said, "We are not obliging any one in war against terrorism." He said extension in Cabinet would be made after his US visit. He said many a heavy weight would surface during formation of Chairman Standing Committees. Gilani said he would also exchange views with Bush and other US leaders on forging cooperation in areas of defence, education, health, science and technology, agriculture and intelligence sharing. Gilani said that on his upcoming visit to Colombo to attend the SAARC summit, he could be meeting his Indian counterpart Manmohan Singh and discuss Indo-Pakistan relations. Responding to a question during his brief inter-action with the media on his arrival in the British capital for an overnight stay on way to the US, the Prime Minister was asked about "stress" in Indo-Pakistan relations attributed to remarks by the Indian Foreign Secretary. The Prime Minister said he telephoned Mr Singh and congratulated him on winning the vote of confidence in the Indian Parliament on the nuclear deal with US. The Prime Minister said he was told by Mr Singh that India desired to settle all the outstanding issues including that of Kashmir. Mr Gilani said both India and Pakistan shared lot of commonality and during his visit to Sri Lanka he would further take up the issues though that at the moment, his meeting has not been scheduled. Information Minister Sherry Rehman and Advisor to the Prime Minister on Interior A Rahman Malik were also present on the occasion. Answering another question, the Prime Minister said that the government was in firm control and that he was the chief executive and taking the decisions. "Whatever the impression is, this is a disinformation," he remarked. Replying to another question,  Gilani said he would pay a courtesy call on  PML-N Chief Nawaz Sharif on his return to Pakistan. He said the political leaders were against meeting each other abroad and it was in fitness of things that he meets Nawaz Sharif in Pakistan. Gilani said the PPP was committed to the restoration of the 1973 Constitution, for the building of democratic institutions, free media in the country and for the independence of judiciary. He added that the party had taken active part in the movement for the restoration of judiciary and the rule of law. The Prime Minister said he was taking a message of peace to US. He said Pakistan was fighting the war on terror for its own protection and security adding that the country was keen to develop the tribal areas through various welfare and development projects. He said Pakistan desired to contribute to the global peace and security and during his stay in Washington he would discuss the whole gamut of relations with US. On his arrival at Heathrow Airport, the Prime Minister was received by Pakistan High Commissioner to the UK Wahid Shamus Hasan and senior officials of the Chancery. He will leave for US on Sunday. To a question about President Musharraf's impeachment and judges reinstatement, he said two major political parties of the country signed charter of democracy after making many mistakes in the past, adding: "We want strong institutions and independent judiciary. I have participated in the long march for free judiciary and I was arrested in this regard." Slain PPP Chairperson Benazir Bhutto had gone to the residence of deposed Chief Justice Iftikhar Muhammad Chaudhry in this context," he added. Meanwhile, declaring the maintenance of rule of law as the government's top priority, Prime Minister Syed Yousuf Raza Gilani said here that writ of the government would be established at all costs. "My priority number one is to maintain law and order in the country and I want that writ of the state should not be challenged," Gilani told journalists before leaving for Washington on an official visit to the United States at the invitation of President George W Bush. Prime Minister in response to a question about the war against terrorism and the situation in tribal areas said, "We have a clear stance on the issue of terrorism and extremism. This is our own fight. This is our own cause." He said it was terrorism, which took the life of Benazir Bhutto. "I have lost my own leader because of terrorism," he added. He also said that containing terrorism and extremism was in Pakistan's own interest. Gilani said this was his first-ever visit to the United States, with which Pakistan had excellent bilateral relations and the two countries were cooperating in several areas, including defence, intelligence sharing, education, health, science and technology, agriculture and various other sectors. "We have lot of cooperation and we want to further enhance cooperation between the two countries," he added. To another question, the prime minister said the main focus of his discussions with President Bush and others in Washington would be on enhancing bilateral cooperation in various fields. About the investors' roundtable on Pakistan's power sector being organised with the World Bank and International Finance Corporation during his visit, Prime Minister hoped that due to this initiative the country would attract huge investment in the energy sector. He recalled that it was the PPP government, which introduced the Independent Power Producers (IPPs) in 1994 and at that time it was not taken seriously but later on the people came to know about the benefits of that initiative. "Now the investment will come in a big way," Gilani said in reference to the upcoming investment conference in the United States on Thar Coal. Prime Minister was seen off at the Chaklala Airbase by Minister for Finance Syed Naveed Qamar, Minister for Labour Manpower and Overseas Pakistanis Syed Khursheed Ahmad Shah, Minister for Kashmir and Norther Areas Affairs Qamar Zaman Kaira, Chief of the Army Staff General Ashfaq Parvez Kayani, Chairman Joint Chiefs of Staff Committee General Tariq Majid and other senior officials. During his stay from July 27 to 30, Prime Minister Gilani would meet President Bush on July 28 who would also host a luncheon in his honour. The two leaders would have a wide-ranging exchange of views on bilateral matters and regional and international issues of common interest. This would be Gilani's first visit to the United States since assuming office in March 2008. Minister for Information and Broadcasting Sherry Rehman, Advisor to PM on Interior Rehman Malik, Special Assistant to PM on Economic Affairs Hina Rabbani Khar were accompanying the Prime Minister, while Minister for Foreign Affairs, Shah Mehmood Qureshi, Defence Minister Ahmed Mukhtar and Minister for Water and Power, Raja Pervez Ashraf would join him in Washington.