to conduct a follow-up assessment mission to Liberia and neighbouring States, in order to investigate and compile a report on the implementation, and any violations, of the measures referred to in paragraph 1 above, including any information relevant to the designation by the Committee of the individuals described in paragraph 4 (a) of resolution 1521 (2003) and paragraph 1 of resolution 1532 (2004), and including the various sources of financing, such as from natural resources, for the illicit trade of arms;