• Zardari denies Pakistan harboured bin Laden • Cameron: questions will be asked about Pakistan’s role • Global security clampdown at embassies and airports 8.58am: Welcome to our continuing live coverage of the aftermath of the killing of Osama bin Laden. One of the main subjects today looks set to be accusations that Pakistan had been harbouring bin Laden . Pakistan’s president Asif Ali Zardari dismissed such charges as “baseless speculation”. Writing in the Washington Post , he said: Some in the US press have suggested that Pakistan lacked vitality in its pursuit of terrorism, or worse yet that we were disingenuous and actually protected the terrorists we claimed to be pursuing. Such baseless speculation may make exciting cable news, but it doesn’t reflect fact. Pakistan had as much reason to despise al-Qaida as any nation. The war on terrorism is as much Pakistan’s war as it is America’s. In Britain, David Cameron chaired a 45-minute meeting of the government’s Cobra emergencies committee , and will update MPs on events in a Commons statement later today. Cameron said Pakistan had “lots of questions” to answer. But he warned against a “flaming great row” with Pakistan’s leaders, who he said were committed to tackling terrorism. Speaking to BBC Radio 5 Live, he said: We should deal with what we do know. And we do know that the Pakistan political leadership is fighting terrorism, we do know that country has suffered. We should work with those forces in Pakistan that want us to combat terrorism and extremism and make democracy take hold in that country. That is in our national interest. We could go down the other route of just having a flaming great row with Pakistan over this. I think that would achieve nothing. But we should deal with what we do know. And we do know that the Pakistan political leadership is fighting terrorism, we do know that country has suffered. We should work with those forces in Pakistan that want us to combat terrorism and extremism and make democracy take hold in that country. That is in our national interest. We could go down the other route of just having a flaming great row with Pakistan over this. I think that would achieve nothing. Osama bin Laden al-Qaida Middle East Pakistan United States Obama administration US foreign policy UN MDG summit 2010 Matthew Weaver guardian.co.uk