US Defence Secretary Robert Gates on Wednesday toured the nerve centre of NATO command in Afghanistan, telling officers an imminent troop surge will turn around the eight-year war against the Taliban. Gates visited the NATO-run International Security Assistance Force (ISAF) joint operation centre of 170 staff from 42 nations, saying improved allied cooperation and the sweeping new strategy put success within reach. "We have all the pieces coming together to be successful here," Gates told staff in the imposing command room with banks of telephones and computers where commanders coordinate operations throughout Afghanistan.