ANKARA (Reuters/AFP) - Nato Secretary-General Anders Fogh Rasmussen urged member countries on Friday to increase the training of Afghan security forces and said the alliance would stay in Afghanistan as long as it takes. The Nato chief, who earlier this month called for reinforcements, would not comment further on troops numbers, preferring to wait until the commander of US and Nato forces in Afghanistan issues a review of the conflict in the coming weeks. I think it is premature to present exact numbers. We are waiting for an analysis from (US Army General Stanley) McChrystal and on the basis of that analysis we will be able to calculate the exact number of troops, Rasmussen said in an interview with a small group of foreign media in Turkey. But he added: The number of troops does matter. Rasmussen urged allies to boost efforts to train Afghan security forces, which he has said must be doubled in size to 400,000 personnel to allow them to take over security from Western troops who hope eventually to withdraw. We need trainers. I urge all allies to step up in the endeavour. There are now more than 100,000 Western troops in Afghanistan, including about 62,000 Americans - nearly double the US strength at the start of the year. Rasmussen, who was recently in Afghanistan, said security had improved, including in the violent Helmand province, but said it was still not satisfactory. We will and we must prevail. We cannot allow and afford Afghanistan to once again becomes a safe haven for terrorists (Al-Qaeda).... If terrorists get rooted once again in Afghanistan, terrorism will easily and rapidly spread to Central Asia and further, he said. A lot of progress has been achieved. It is premature to present a timetable for withdrawal, but we will stay as long as it takes. Partial results from an Aug 20 presidential election show President Hamid Karzai leading his main rival, former foreign minister Abdullah Abdullah, who has said the polls were widely rigged. Rasmussen said he was not concerned about the long wait for a result, adding that Nato was ready to provide security in the event of a second round run-off. The Nato chief urged Turkey to lift objections to closer ties between the alliance and the European Union. He argued the lack of a security pact between Nato and the European Union endangered troops from both organisations operating in Afghanistan and led to absurd consequences on the field. We need to find a pragmatic solution to this problem, and its a problem, he told a joint news conference with Turkish Foreign Minister Ahmet Davutoglu. We cannot understand why Turkey has been unable to join the European Defence Agency, for instance, Davutoglu retorted. Rasmussen also urged more Turkish support to stabilise Afghanistan, stressing especially a growing need to train the war-torn countrys security forces. Davutoglu refrained from a specific pledge, saying that Turkey, which has about 1,000 troops in Afghanistan, had already trained nearly 2,000 Afghan security personnel. Our contributions to training will continue, he said. Speaking to a select group of journalists later, Rasmussen explained that Gen Stanley McChrystal, the commander of US and Nato troops in Afghanistan, was currently drawing up a report assessing military needs.