CANBERRA (AFP) - The United Nations can help facilitate peace talks in Afghanistan, UN chief Ban Ki-moon said on Friday, urging the international community not to abandon the nation as troops pull out. Speaking ahead of the 10th anniversary of the September 11 attacks that triggered the Afghan war, Ban also recalled the chaos of that fateful morning which he witnessed first hand from the UN headquarters in Manhattan. The UN secretary-general stressed that while foreign combat troops are due to leave Afghanistan by 2014, this should not be seen as a full exit for the global community. The international community has an obligation to continuously engage with Afghanistan even though Isaf (International Security Assistance Force) members may withdraw their military engagement, he said in Canberra. There is very serious insecurity, Ban added, saying that foreign forces could help strengthen the Afghan National Army and police. He said the UN could provide technical assistance and political advice to the administration of President Hamid Karzai to conduct negotiations with Taliban-led insurgents, which Western officials say are tentatively underway. The military means are important and useful and can be effective but thats not all, he said. There should always be a political dialogue and there is a consensus in the international community that there needs to be some sort of negotiation and dialogue. There are currently around 100,000 US troops in Afghanistan, of which 33,000 will leave by mid-2012 in a process scheduled to see all American combat soldiers exit the country by the end of 2014. Ban, who was in New York the day two passenger jets slammed into the World Trade Center a decade ago, bringing down the twin towers, said he remembered the horror and confusion of those first few hours. I myself was at the scene on that particular day, he said. I was going to be just in a few hours time the chief of staff of the president of the general assembly. Because of the terrorist attacks, everybody had to be evacuated. There was a vacuum of leadership in the United Nations. It was quite a chaotic situation for the United Nations. After 24 hours we convened the general assembly. This is still very vivid in my memory. The first thing we did... was adopt the strongest possible resolution of the general assembly... condemning terrorist attacks in the strongest possible terms. But Ban said despite resolutions, declarations and efforts, the international community has not been free from these attacks in the decade since, noting last months bombing of the UN mission in Abuja, Nigeria. That was the biggest loss in the history of the United Nations. Twenty-three UN staff killed and more than 80 people wounded, the secretary-general said. My position is that terrorism cannot be justified under any circumstances or whatever justification. This must be stopped. On Palestine, Ban said Palestinian statehood was long overdue, a day after its leadership launched a campaign to become the world bodys 194th member state. The two-state vision where Israel and Palestinians can live... side by side in peace and security - that is a still a valid vision and I fully support it, he told reporters. And I support also the statehood of Palestinians; an independent, sovereign state of Palestine. It has been long overdue. But... the recognition of a state is something to be determined by the member states, he added. It is not by the Secretary General so I leave it to the member states to decide to recognise or not to recognise. The United Nations leaders comments came after Palestinians Thursday launched their campaign to join the UN. Their National Campaign for Palestine: State 194 is part of the build-up to September 20, when President Mahmud Abbas is expected to submit a formal request that the UN accept Palestine as a member. However, Washington has already confirmed it would veto any bid, a move also opposed by Israel. The official Palestinian campaign of support for the bid got under way with about 100 people marching to UN headquarters in the West Bank Thursday to hand a letter to the UN representative asking that Ban support them. If the bid is vetoed in the Security Council, the Palestinians plan to turn to the General Assembly where they are expected to easily win the votes needed to upgrade their representation from observer body to non-member state. Meanwhile, the US ambassador to Kabul said the Taliban must feel more pain for peace talks to progress. Veteran diplomat Ryan Crocker indicated that insurgents needed to face increased military pressure while admitting that efforts to talk peace with them had so far failed to produce concrete results. The Taliban needs to feel more pain before you get to a real readiness to reconcile, Crocker, who started his job in July, said in an interview with the Wall Street Journal.