UNITED NATIONS (AFP/Reuters) - World leaders kicked off their annual debate at the United Nations on Wednesday, with Libyan leader Muammar Gaddafi, in his first ever address to the UN General Assembly, with the UN chief challenging world leaders to cleanse the globe of nuclear weapons, tackle the threat of catastrophic climate change and combat growing poverty from the global financial crisis. UN Secretary-General Ban Ki-moon opened the debate, appealing to more than 120 leaders present for genuine collective action to roll back climate change as well as global poverty and push for nuclear disarmament. If ever there were a time to act in a spirit of renewed multilateralism - a moment to create a UN of genuine collective action - it is now, Ban told the assembly. He warned presidents, prime ministers and diplomats from the UNs 192-member states that no nation, large or small, can violate the human rights of its citizens with impunity. He urged a revival of negotiations to achieve a Mideast peace with Israel and Palestine live side-by-side in peace. And he pledged to see the Afghans through their long night and stand as well with the people of Pakistan. Amid many crises - food, energy, recession and pandemic flu, hitting all at once - the world looks to us for answers, Ban said. Ban again exhorted the leaders to rise to the greatest challenge we face as a human family. General Assembly President Ali Treki, of Libya, echoed the need for international unity. The international community has learned from experience that transnational threats and the multiple crises facing the world today can only be addressed through responsible international cooperation, he told the audience in the assembly chamber that included about 120 world leaders. In his first ever speech to the 192-member body for the first time in his 40 years in power In his first ever speech to the UN General Assembly in his 40 years in power, Libyan President Muammar Gaddafi accused the veto-wielding powers of the Security Council of betraying the principles of the UN charter. The preamble (of the charter) says all nations are equal whether they are small or big, Gaddafi said through an interpreter. He received a smattering of applause. Clad in a copper-coloured robe with an emblem of Africa pinned over his chest, the Libyan leader dropped his paperback copy of the charter on the podium several times before tossing it over his shoulder. Reading from a copy of the UN charter, Gaddafi said: The veto is against the charter, we do not accept it and we do not acknowledge it. Veto power should be annulled, Gaddafi said. The Security Council did not provide us with security but with terror and sanctions, he told leaders gathered for the opening day of the 192-nation General Assembly. The Libyan leader President launched a spirited defence of Afghanistans Taliban Wednesday in a rambling address to the UN General Assembly. Why are we against the Taliban? Why are we against Afghanistan? he asked leaders of more than 120 nations attending the annual UNGA debate. If the Taliban wants to make a religious state, okay, like the Vatican. Does the Vatican constitute a danger against us? No, said the Libyan leader. If the Taliban wants to create an Islamic emirate, who said they are the enemy? he added. He berated the West in a diatribe, demanding $7.77 trillion as compensation for colonising Africa and reform to the terrorist global body. The colourful Libyan leader was introduced to the podium by the title King of Kings as he took the podium after US President Barack Obama. He denounced the Security Councilfor its monopoly on the right to declare when matters pose a threat to international security, saying it amounted to terrorism. Superpowers have interests and they use the power of the UN to protect their interests. The third world is terrified and being terrorised and living in fear, he said. Libyas maverick leader Gaddafi offered profuse praise for Barack Obama - and said he wouldnt mind if he (Obama) became US president for life.