Peacekeepers 'must be allowed to use force'
The UN says soldiers in the Afghan peacekeeping force must have the right to take military action if necessary.
Britain is set to lead the force, with up to 200 British marines expected to be deployed on the streets of Kabul by Saturday.
Afghanistan agreed to a multinational force - but only with provisions in place which don't explicitly authorise its use of military force.
But key members of the United Nations Security Council have decided a resolution authorising the force to help provide security in Afghanistan, must give the soldiers the right to take military action.
Western diplomats have said the initial force is likely to be about 1,000 troops, but it could grow to about 5,000 troops
Britain expects to provide up to 1,500 troops.
