[Pak Daily Times] The United States has said that the A Q Khan nuclear network has been rendered obsolete as a result of concerted international efforts. "The network, as far as we understand, is basically defunct because of the efforts taken in a number of countries against the constituent parts of that network. We think that the network is basically defunct," said acting Assistant Secretary of State for International Security and Non-Proliferation, Vann H Van Diepen. His remarks at a House Committee on Foreign Affairs hearing reiterated the US assessment that the non-state network, involved in nuclear proliferation, has been put out of business. Diepen told lawmakers, "Of course, we've done a lot of work in a number of countries where the network was able to operate more freely because there were no export controls in place."