This is the World News from the BBC.
The mothers of three young Americans detained in Iran since last July have returned to the United States after being allowed to meet them. Soon after arriving In Tehran on Wednesday, the mothers had appealed for the release of the three - Sarah Shourd, her partner Shane Bauer and Josh Fattal, saying they had entered Iran accidentally while hiking in northern Iraq. The Iranian government has accused the three Americans of spying.
A court in Chile has sent back to prison a Pakistani man who was arrested at the United States embassy earlier this month after allegedly testing positive for explosives. The court said Mauhannas Saif ur Rehnab Khan was “a danger to society” and revoked his probation. Mr Mauhannas, who insists he is innocent, is accused of entering the embassy with traces of explosives on his hands and possessions when he went there to discuss a visa.
The world's most expensive stamp, Treskilling Yellow of Sweden, has been sold at auction for an undisclosed sum. James Reed has more.
The Treskilling Yellow owes its extraordinary value to its exceptional rarity. It's believed to be the only surviving misprint of an 1855 three shilling stamp that was supposed to be green. The sale at a private auction house in Geneva was shrouded in secrecy. But it's thought the stamp fetched at least the 2.5 million dollars it’s sold for in 1996. That would confirm its reputation as the world's most valuable object by weight. The auctioneer said the buyer saw the stamp as a solid investment in turbulent economic times. Certainly, wealth does not get much more portable.