Dawood Ibrahim, the man labelled by the US administration a year ago as a "specially designated global terrorist", is brazenly back in business in the Pakistani port city of Karachi. Indian intelligence circles are stunned that Dawood is moving about openly in Karachi. What is more baffling is that top builders of Mumbai and other businessmen are personally calling on him regularly at his bungalow in Clifton in Karachi. Earlier, Mumbai businessmen having dealings with Dawood would fly to Dubai and from there go to Karachi on false Pakistani passports arranged by the don. But they have now done away with this clumsy procedure and are directly flying to Karachi and meeting the leader of India's biggest crime syndicate, police sources said. "We are keeping a close watch on the activities of these businessmen and will take action against them at the appropriate time," a police official told TOI on Wednesday. What intelligence personnel find odd is that the US administration, which wields tremendous clout in the corridors of power in Islamabad, is doing precious little to act against Dawood, even though it had accused him of links with the most-feared terrorist organisation in the world, the al Qaeda of Osama bin Laden. The US has already frozen Dawood's assets in the US and has asked the member-countries of the United Nations to do likewise. But this order has apparently not made any difference to Dawood.