NEW : Greek government declares a state of emergency for the entire country . `` Our emergency services are overstretched and it is humanly impossible to battle this force of nature , '' a top fire official told CNN . NEW : Death toll revised to 44 for fires sweeping southern Greece . European Union says 30 member states have offered help .
NEW : Greek government declares a state of emergency for the entire country . NEW : Death toll revised to 44 for fires sweeping southern Greece . European Union says 30 member states have offered help .