Ihsan said the insurgents would start moving across the mountainous border in March . Five Pakistani groups will join efforts , a Pakistani government spokesman says . Fugitive Mullah Omar has asked Pakistani groups to work together , the spokesman says . A leaflet calls for an end to the killings of innocent civilians .
Five Pakistani groups will join efforts , a Pakistani government spokesman says . Fugitive Mullah Omar has asked Pakistani groups to work together , the spokesman says . A leaflet calls for an end to the killings of innocent civilians .