Aid agencies say that two-thirds of what does arrive bypasses the Afghan government.
Meanwhile, around 40% of assistance returns to donor nations as corporate profits and high consultant costs, according to a report from the Agency Coordinating Body For Afghan Relief of aid groups.
Funds going towards reconstruction are just a fraction of military expenditure, with €16.23bn spent on security-related assistance, such as building the Afghan security force, since 2001, according to ACBAR.
The international community had pledged $25bn to Afghanistan since 2001, when the extremist Taliban was removed from power.
However, just $15bn in aid has so far been spent.
About two-thirds of foreign assistance bypasses the Afghan government, which undermines efforts to build effective state institutions.
The World Bank says that to build a state and be accountable to its people, the government needs to have a say over resource allocation.
