LONDON (Online) - Pakistans senior civil and military officials are sharing tightly held information about the countrys nuclear weapons programme with western countries in a bid to allay fears about the security of warheads in the face of a Taliban advance. A senior western envoy in Islamabad told the Financial Times that diplomats had been given assurances about the security in place for the weapons systems and also their distance from Taliban-held territory. Pakistani officials presented this as a move to satisfy the west that its weapons would not fall into Taliban hands. We have renewed our pledge to keep our nuclear weapons safe, said a senior Pakistani official. The briefings were aimed, he said, at reassuring the international community that there were adequate safety measures to keep a complete lid on our weapons. The Talibans territorial gains beyond Pakistans border regions in recent months have raised fears - particularly in India - that nuclear weapons might fall into the hands of religious extremists. Although the whereabouts of Pakistans weapons are secret, analysts say that some are placed far from the Indian border to allow Islamabad adequate response time in the event of an attack from its old enemy, and fellow nuclear power, India. Western diplomats said a Taliban advance on Islamabad threatened to bring militants perilously close to some of Pakistans main nuclear installations. But they doubted militants were capable of overwhelming heavily protected installations. At the weekend, Hillary Clinton, the US Secretary of State, described the toppling of the Pakistani govt and capture of nuclear weapons as unthinkable. US officials in Islamabad have assured that the threat of loose nukes is small. Western diplomats say the nuclear programme resides in a ringfenced part of the military under the command of a well-respected general and protected from rogue elements that might seek to capture a weapon.