Why dont the French put in a claim? When claiming (inaccurately) that we nicked the islands from them (there was no such country as Argentina at the time), they conveniently forget that Spain had previously nicked them from the French. My niece, who is English but has lived in Argentina for 40 years and is to all intents and purposes Argentinian tells me she had no idea that Las Malvinas is a corruption of Les Malouines, the original name given to the islands by French fishermen from St Malo who were ejected by the Spanish. Their attitude is a bit like Spain banging on about Gibraltar and hoping that nobody will notice Ceuta and Melilla in Morocco.
In any case I understand this UN committee is merely an advisory body and has no power to make alterations as to who does or does not own territorial waters.