<p>The attack is the latest targeting international troops, but there is no immediate word on casualties.<br /><br />Local government spokesman Mubarez Zadran says a suicide car bomber struck the convoy as it rolled through Khost province's Mando Zayi district. He says foreign troops quickly cordoned off the road.<br /><br />A spokeswoman for the international force, Lt Cmdr Katie Kendrick, confirmed the Khost explosion, but said the convoy apparently hit a roadside bomb. She said no casualties were immediately reported.</p>.<p>Insurgents have intensified attacks as 30,000 more American troops arrive to try to turn around the 9-year-old war and stabilise the Afghan government.(AP</p>
<p>The attack is the latest targeting international troops, but there is no immediate word on casualties.<br /><br />Local government spokesman Mubarez Zadran says a suicide car bomber struck the convoy as it rolled through Khost province's Mando Zayi district. He says foreign troops quickly cordoned off the road.<br /><br />A spokeswoman for the international force, Lt Cmdr Katie Kendrick, confirmed the Khost explosion, but said the convoy apparently hit a roadside bomb. She said no casualties were immediately reported.</p>.<p>Insurgents have intensified attacks as 30,000 more American troops arrive to try to turn around the 9-year-old war and stabilise the Afghan government.(AP</p>