The building has been refurbished and extended by the architect Zaha Hadid

Foundation’s sales agent also worked for authentication board; president rejects claim decisions may have been made for financial gain

Major grant to expand project that uses images from Corona military satellite system to pinpoint archaeological remains

“It’s a granular look at different types of presidential films of the past century,” says one of the festival’s founders

Phillips’s chief executive says Frieze might have distracted potential buyers

A Las Vegas gun company announced in July that it had created an accessory for the “stylish” gun owner

Founder declares that hostile takeover bid has been defeated, but opponents are regrouping

Archives of the western allies will be searched for clues

The artist’s foundation reveals its intention to become one of the largest grant-making organisations in the country

The museum will purportedly need $8m in funds

While some fear the negative effects of the closure of the vetting board, others say its role was not essential

Few will mourn its demise

The Pope apparently insisted that the Vatican's Raphael’s Madonna di Foligno be displayed alongside Dresden’s own Raphael, painted in the same year

Pressure eased over extradition of former KGB agent as Yuri Gagarin statue is unveiled in London

He has described the Chinese artist's detention as “barbaric”

Joe Simon-Whelan spent three years trying to prove authenticity of a painting depicting the artist himself

Artists, curators and the community unite to create corner of paradise in rundown park

Authentication board says famous museum director “falsified” their history

Gagosian among four called to court

Yale prepares for the 2012 installation of its decorative arts galleries by reconstructing a period room

A group of the soldiers were on loan to the La Moneda Palace in Santiago

This massive retrospective will include recreations of past pieces as well as a new, physically demanding work

Sikorski says that it would be better to have a park in its place

He is creating video and photographic works to document the conflict

A $1m reward is being offered

Collector says a signed work from the same series confirms his work is genuine

He was prevented from testifying in defence of activist Tan Zuoren

Owner cancels reward for his missing set, citing problems with his insurer

New research challenges Russians’ claim that they own many cultural valuables from the independent state

Both sides claim the other damaged historic buildings