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 imposed by resolution 1521 (2003), 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;