The artist explains his anti-war installation

Tate director Sir Nicholas Serota says no, but the director of the Berlin Gemäldegalerie, among others, believes it is

The gallery is hoping to display all three Rigi watercolours in January, uniting them for the first time

Serota takes a mysterious trip

Tate’s US patrons applaud the destruction of cake effigies, while MoMA makes life difficult

Meeting between museum directors results in increased flexibility whilst borrowing pictures outside the 1900 division

Why was The Dark Rigi sold privately, when a public sale would have given valuable tax breaks?

The Outset/Frieze Art Fair Fund's budget of £150,000 saw 28 works enter the collection

A complete list of Tate's acquisitions from the last two years, and what they paid for them

Legendary dealer is thought to own 700 works worth £100m

Next year's schedule is packed with big names

Both the US National Gallery and Tate wanted to acquire The Dark Rigi but it was sold to a private collector

In an unprecedented move, the gallery has published the cost of all its purchases for the last two years

The Charity Commission is now investigating all acquisitions made from artists while they were serving as trustees

Designed by Herzog & de Meuron, this addition to the museum will provide much needed exhibition space

The Dark Rigi has become embroiled in murky legal waters

Neither will the National Gallery’s Ambassadors which was judged too fragile to travel across London

MLA director apologises as Tate reserves right to decide over national accreditation—without loss of privilege

The Tate Triennial might be a critical damp squib, but the veteran artist Cerith Wyn Evans made sure the opening went with a bang

Trustees discuss idea following our report

The Tate could not raise the money to buy this unique portfolio. Will a US museum save it before it is dispersed at Sotheby’s?

Tino Sehgal refuses to document his work, rejects written contracts, and only takes cash

Meanwhile the Charity Commission investigates purchase of The upper room

After Tate resisted the release of the sums paid for Ofili's 'The Upper Room', Tate will now more often disclose the price of works bought from artist-trustees.

Commission sum disclosed for Tom Phillips, unlike the purchase of "The Upper Room"

Jan Debbaut leaves Tate

The controversy over the institution’s acquisition of a work by one of its trustees rumbles on

A year ago the gallery launched a campaign to raise £100 million. Since then, £50,000 has been pledged from donors

The move would put the institution in competition with Tate