A plume of smoke rises above the Afghanistan capital.<br/> <br />A Taliban suicide bomber attacked a convoy of coalition troops, littering this Kabul Street with rubble and glass.<br/> <br />The blast tore through scores of cars along the main airport road near the US embassy, twisting them into mangled hunks of metal.<br/> <br />(SOUNDBITE) (Pashto) WITNESS HAJI AWAL GUL, SAYING:<br/> <br />"I was stuck in traffic when the explosion happened. It was powerful and the target was foreign vehicles."<br/> <br />Security forces and ambulances arrived at the scene minutes after the attack on Tuesday morning.<br/> <br />A foreign soldier from the convoy can be seen recieving first aid, a body lies next to him.<br/> <br />Tensions have been building in Afghanistan after a disputed presidential election destabilised the country.<br/> <br />Most foreign troops will withdraw from Afghanistan by the end of the year.<br/> <br />And Taliban insurgents have been exploiting the uncertainty, launching bombings and attacks like these across the co
