In Afghanistan insurgents attacked three convoys ferrying fuel and supplies to Nato troops stationed in western and eastern part of the country killing nine Afghan security guards and torching at least 15 fuel tankers. Police said Two of the attacks on the supply convoys took place in eastern Ghazni province today , where roadside bombs killed four Afghan security guards escorting the trucks to a nearby base for Polish troops. Insurgents also ambushed a Nato fuel convoy late last night along the border between Herat and Farah provinces in the west, killing five Afghan guards. Seven other guards were wounded in the attack after insurgents opened fire on the convoy. Insurgents later set fire to 15 fuel tankers.