US created 'Cuban Twitter' to stir unrest
4 April 2014 Last updated at 12:09 BST
The US created a text-message social network designed to foment unrest in Cuba, according to an investigation by the Associated Press news agency.
ZunZuneo, dubbed a "Cuban Twitter", had 40,000 subscribers at its height in a country with limited web access.
The project reportedly lasted from 2009-12 when the grant money ran out.
Sarah Rainsford reports.