TALIBAN fighters have surrounded the city of Ghazni in central Afghanistan, taking over civilians' homes to fight security forces, officials have said, the latest urban centre under threat from the insurgents. The offensive was the latest on a provincial capital as the Taliban make a fresh push to surround cities and gain territory, emboldened by the departure of foreign forces. "The situation in Ghazni city is very critical...the Taliban use civilian houses as hideouts and fire upon the ANDSF (Afghan security forces), this makes the situation very difficult for the ANDSF to operate against the Taliban," said Hassan Rezayi, a…