Former US President Bill Clinton on Saturday named social inequality as one of the world's biggest problems during a visit to Hungary, according to DPA. "Half of the world's population is excluded from the benefits of globalisation," MTI news agency quoted him as telling a collection of politicians and businessmen at a gala dinner in Budapest. Clinton said that this problem came despite the fact that the countries of the world had far stronger economic links. In his speech, Clinton also touched on terrorism, climate change and global migration.