Pakistans ambassador to the United States Husain Haqqani has said that Pakistan government should investigate how Osama bin Laden managed to hide in a compound in Abbottabad. In an interview to US TV, he said he didnt know whether the al-Qaeda leader had help from his the government or military to stay concealed in Abbottabad, adding he did not think that speculations were going to solve the problem. What we need now was for Pakistans elected leaders to exercise the leadership and get to the bottom of the matter, Haqqani said, during the interview. Haqqani urged patience, saying said the US shouldnt rush to judgment about whether to withdraw military aid or to put undue pressure on the Pakistani government. He was of view that a government elected three years back could not be held accountable of decades old matters. Haqqani, a Boston University professor who took leave to serve as Pakistans ambassador to the United States, must field pointed calls from sources that hold sway over his countrys crucial alliance with the United States: Pentagon officials and members of Congress, says a report published in The Boston Globe Sunday. Some seek an explanation for why Pakistans powerful military and intelligence service could not find the terrorist mastermind all these years; others wonder whether Pakistani elements had been secretly protecting him. Some have called for a halt to the billions in US aid that Pakistan receives. There are those who have called to say, 'Mr. Ambassador, your government has some questions to answer, Haqqani said in an interview. And there are also those who call to say, 'We understand that this is complex. Haqqani, who has tried for months to halt deteriorating relations between the two countries, now faces perhaps the greatest challenge of his career: convincing Americans that Pakistan is not to blame for harboring bin Laden. The threatening phone calls that have been pouring into the Pakistani Embassy in Washington are not what concerns Husain Haqqani most since a US raid killed Osama bin Laden in the heart of his nation. Haqqani had already declared that Pakistan will launch an inquiry into the question of whether any government agency knew of bin Ladens whereabouts. He frequently notes that Pakistans military and intelligence agencies have lost more officers in the war against militants than any other country and arrested more suspected terrorists than any country but that Americans continue to push for more. Haqqani has a reputation as a political survivor capable of navigating difficult situations. In Washington, he has been called the Energizer Bunny of ambassadors, relentlessly hounding those who he thinks have not given Pakistan a fair shake. Brian Katulis, of the Center for American Progress, recalled that Haqqani once took the time to complain to him that a Pakistani representative had not been invited to speak on a small panel the center held about problems facing the country.