The US has no standardised process for making compensation payments to the families of thousands of Afghan civilians killed in US-led military operations.
A Taliban suicide bomber rammed a car packed with explosives into a wall around the German consulate in the northern Afghan city of Mazar-i-Sharif on Thursday.
The EU special representative for Afghanistan said that they would seek “a realistic timeline” for a new peace process in the conference.
Three members of the government security forces had been killed, with another eight wounded.
The Taliban control or contest more territory in Afghanistan than at any time since they were ousted by a US-backed intervention in late 2001, and US officials have acknowledged the uneven performance of Afghan security forces.
The identity of the victims was not immediately clear but a campaign of kidnappings against Shi’ite Hazaras in the past year has became a source of ethnic tension.
More than six months on, the elusive truth on the air strike that killed 42 is only slightly clearer.
The Geneva Conventions provide a mechanism for an international probe but this would require the consent of the United States and Afghanistan.
Recent attacks in Kunduz in northeast Afghanistan have resulted in the bombing of the only hospital in the region.