Bill De Blasio sworn in as mayor of New York City
1 January 2014 Last updated at 21:10 GMT
The first Democratic mayor of New York City in more than 20 years has taken his oath of office at City Hall where he pledged to pursue a liberal agenda.
Bill de Blasio, who succeeds billionaire Michael Bloomberg, was inaugurated at a ceremony presided over by former US President Bill Clinton.
Philippa Thomas reports.