Kabul, Afghanistan: A top UN envoy met with the Taliban-led Afghan government's higher education minister Saturday to discuss the ban on women attending universities. Markus Potzel is the first international official to meet with him since the ban was introduced last month.Taliban authorities on December 20 ordered public and private universities to close for women immediately until further notice. It triggered widespread international condemnation, including from Muslim-majority countries such as Saudi Arabia, Qatar and Turkey.Higher Education Minister Nida Mohammad Nadim has defended the ban, saying it is necessary to prevent the mixing of genders in universities and because he believes some subjects violate Islamic principles.That ban was followed days later by a ban on Afghan women working for national and international nongovernmental groups, another decision that caused global condemnation and the suspension of work by major aid agencies.The UN mission in Afghanistan said that special envoy Potzel called for the urgent lifting of these bans in his meeting with Nadim, saying the country is entering a new period of crisis. 'Taliban bans on female education and work for aid agencies will harm all Afghans,' the mission said.Nadim's response to Potzel's request wasn't immediately known. Messages left with a spokesman were not immediately returned.Potzel has also met with Economy Minister Qari Din Mohammed Hanif, who issued the NGO ban; Deputy Prime Minister Abdul Salam Hanafi; Interior Minister Sirajuddin Haqqani and former president Hamid Karzai in recent days to discuss the crackdowns on women and girls.The discussions come ahead of a closed-door meeting of the UN Security Council on January 13 about Afghanistan.Nadim, a former provincial governor, police chief and military commander, was appointed minister in October by the supreme Taliban leader and previously pledged to stamp out secular schooling. He opposes female education, saying it is against Islamic and Afghan values.