Raids and search operations will be carried out on madrasas propagating extremism and terrorism and have become safe haven for militants, said President Pervez Musharraf yesterday. He threatened madrasas with closure unless they register with authorities by the yearâs end. He also emphasized the need to stop funds flowing from outside the country to extremist elements.At the same time Musharraf praised madrasas for helping about one million of the poorest children in Pakistan, and said the government would encourage the schools to teach modern subjects like science and technology. âHowever, we will not let any madrasa to harbor terrorists or teach extremism and militancy,â Musharraf said at a conference on terrorism in Islamabad. There are estimated to be more than 10,000 madrasas in Pakistan, long considered