Authorizes the establishment of a multinational force under a unified command structure, pursuant to the request of the Government of Indonesia conveyed to the Secretary-General on 12 September 1999, with the following tasks: to restore peace and security in East Timor, to protect and support UNAMET in carrying out its tasks and, within force capabilities, to facilitate humanitarian assistance operations, and authorizes the States participating in the multinational force to take all necessary measures to fulfil this mandate;