Several prominent political leaders escaped the ceremony unhurt, including Abdullah Abdullah, the country's chief executive and a top contender in last year's presidential election
The row has highlighted the tough road ahead, with the Taliban's decision to end a partial truce Monday complicating matters further
The Taliban's military commission circulated an order telling fighters to resume operations, according to a document provided to AFP by an insurgent source
A suicide bomber detonated explosives in a vehicle at the military base in Maiwand district
The number of attackers was six, all equipped with suicide vests and light arms, according to the security forces