When a newspaper published photographs of a single day's multiple muggings at one street corner, President Nelson Mandela promisedtodosomething about it.
Tiangong-1 will demonstrate the critical technologies needed by China to build a fully fledged space station - something it has promisedtodo at the end of the decade.
Reddy is lobbying the Indian government to adopt and enforce the international drug-patent regime, something Delhi has promisedtodo by 2005 under a World Trade Organization agreement.