Greenpeace accused the European Union of blocking international efforts to stop illegal and unregulated fishing boats from depleting world fish stocks. The environmental organization said the EU, along with Mexico and Brazil, were trying to weaken a U.N. pact on illegal fishing due to be agreed at a meeting in Rome later this week. The U.N. Vessels registered in countries such as Belize, Honduras and Panama, which are not party to regional fishing treaties, are not bound by rules such as fish quotas or regulations on types of nets that can be used. "They are ruthlessly exploiting already depleted fish populations and robbing legitimate fishermen of millions of honestly earned dollars," Greenpeace said.