Washington, Apr. 9 : The United States has expressed concern over reports of Taliban taking new areas under their grip in Pakistan, and has termed the issue of existence of extremist elements in the Federally Administered Tribal Areas (FATA) as `critical'.
Addressing media persons here, the US State Department spokesperson Robert Wood said: "Certainly, in terms of dealing with extremism, extremist elements that are operating on Afghanistan's border, in the FATA, this is a very complex issue."