KABUL, Afghanistan (AP) — A suicide bomber attacked an air force bus in Afghanistan's capital early Wednesday, killing eight military personnel and wounding another 13 The Taliban claimed responsibility for the attack, with a spokesman for the insurgents, Zabihullah Mujahid, confirming that the air force bus was the target. The attack came as the country struggles through its first democratic transition of power, with one of the candidates in last month's presidential runoff .