Bomb explodes near school, wounds 21 in western Afghanistan

Provincial officials in western Afghanistan say a bomb has exploded near a school wounding 21 people, many them young students

KABUL, Afghanistan -- A bomb exploded near a school in western Afghanistan on Monday wounding 21 people, many them young students, a provincial official said.

No one immediately claimed responsibility for the attack, though Taliban insurgents have a presence in the region.

The bombing came three days after a powerful suicide truck bomb struck a guesthouse in eastern Afghanistan killing 21 people and wounding 90 others. Most of the casualties in that attack in Lagor province were high school students. No one has claimed responsibility for the late Friday night bombing in Pul-e-Alam, the capital of Logar.

The attack comes two days after the remaining 2,500 to 3,500 American troops officially began leaving the country. They will be out by Sept. 11 at the latest. The pullout comes amid a resurgent Taliban, who control or hold sway over half of Afghanistan.

The top U.S. military officer said Sunday that Afghan government forces face an uncertain future and possibly some “bad possible outcomes” against Taliban insurgents as the withdrawal accelerates in the coming weeks.