The US tightens existing sanctions on Iran - targeting oil revenue and media - over its alleged nuclear weapons programme.

Fierce fighting breaks out between rebels and pro-government troops in the Syrian capital, as bombings hit a central town and peace talk hopes fade.

The UK tax authority has made a good start at cutting costs but faces a longer term battle to protect customer service, a report finds.

Plans to scrap GCSEs in key subjects in England and replace them with an English Baccalaureate Certificate seem set to be abandoned by ministers.

A US regulator says it may take "weeks" for it to complete its probe into battery problems that hit two of Boeing's 787 Dreamliner planes.

A year-long inquiry finds widespread use of banned drugs in Australian sport, with links to organised crime and possible match-fixing.

If a solar superstorm struck the Earth, the effects on the UK would be "challenging but not cataclysmic", says a report from the Royal Academy of Engineering.

Motorcyclists over the age of 60 are three times more likely to end up in hospital after a crash than younger bikers, a US study suggests.