World News Update, what you need to know

A subdued Bill Clinton has offered a deeply personal endorsement of his wife's presidential campaign, telling voters that Hillary Clinton's plans offer the best chance for the US to achieve economic prosperity and a secure future.

ELSEWHERE:

BISHKEK - A British employee of Kyrgyzstan's biggest gold mine, detained by police after comparing a national dish to a horse penis, has been told to leave the country within 24 hours for working without an official permit.

CANTERBURY, England - A Sudanese man who made global headlines in August when he walked 50km through the Channel Tunnel from France to England, highlighting the plight of migrants, has been granted asylum in Britain.

NEW YORK - Facebook founder Mark Zuckerberg wants to build an artificially intelligent assistant in 2016 to help run his home and assist him at work.

MILAN - Sports carmaker Ferrari is following up its successful Wall Street listing with a stock market launch in Milan, as it begins a new era as a stand-alone company free of the mass-market associations of its former parent, Fiat Chrysler.

TORONTO - Canada's public safety minister has promised to investigate the case of a six-year-old boy whose name appears to be on a travel security risk list.

LONDON - Mystery surrounds the identity of the young boy who appears in the latest Islamic State (IS) video, but it's not the first time children have been used in the group's propaganda.