Forces in Afghanistan are on high alert after officials say a suspected suicide bomber attacks a military convoy outside Kabul.<br/> <br />Officials say the attack killed at least three foreign soldiers. It's unknown how many were injured.<br/> <br />(SOUNDBITE) (Dari) BAKER AND EYEWITNESS, NIAMATULLAH, SAYING:<br/> <br />"After the blast my bakery windows broke. Later on, smoke covered the area then Americans arrived and carried three bodies from the scene."<br/> <br />The Taliban claimed responsibility for the attack which comes as President Hamid Karzai deliberates over an agreement allowing U.S. forces to stay in the country beyond 2014.<br/> <br />Many Afghans, including a number of tribal leaders, have urged Karzai to sign the U.S. pact quickly.<br/> <br />Some are concerned about security in the country after 2014 when most foreign forces are leaving.
