President Hamid Karzai of Afghanistan has indicated he may amend a ban on the use of private security contractors, which is due to come into force at the end of the year.
Mr Karzai said on Sunday there might be exceptions for major international development projects.
He is asking for details of planned work and the security needs of developers in order for a government review to be held.
The Afghan government says the contractors lack accountability. It has already formally banned eight foreign private security companies.
Private security companies in Afghanistan employ about 26,000 registered personnel.
Mr Karzai is under intense pressure to extend the deadline of 1 January to enable foreign organisations to find an alternative.