British Prime Minister David Cameron has said the Islamabad authorities have "lots of questions" to answer over the support given to Osama bin Laden during his stay in Pakistan, but stressed that a "massive row" with its political leadership was not in Britain's national interest. Cameron said it was important to "engage" with Pakistan and deal with the extremists rather than "throw up one's hands in despair", since the stronger the democracy, the more the country would work with international partners to combat terrorism. The prime minister urged co-operation with Pakistan on security matters as the president of Pakistan dismissed claims that his country harboured Bin Laden as "baseless speculation" amid disbelief that the authorities were unaware that al-Qaida's leader was residing in an area full of soldiers and close to the country's top military academy.