The Council then reiterated the objectives of the Force, set out in resolutions 425, 426 and 444 which must be attained. The resolution commended the work of UNIFIL, adding that it must enjoy freedom of movement and communications to implement the resolution. It also reaffirmed the validity of the General Armistice Agreement between Israel and Lebanon, calling on both parties to reactivate the Mixed Armistice Commissions, and extended the mandate of UNIFIL until 19 December 1979.