Public collections have missed out on the chance to permanently acquire a work by Rembrandt after license application is withdrawn

Plea comes as Boris Johnson publishes guidance for councils, planners and developers on protecting arts venues

Most works, by emerging and established artists, are valued at less than $50,000

Show comes as publication date for his catalogue raisonné is announced for next autumn

Toy maker has refused to supply materials for artist’s installation in Melbourne

Best known for circular abstract works, he lived for many years in the West and had a solo exhibition at the Guggenheim, New York

The anonymous buyer of the Portrait of Catrina Hooghsaet has withdrawn their export licence application, derailing plans for a public collection to match the price

The graphic artist also served as the party’s culture minister in the 1960s and 70s

More and more institutions are returning antiquities with unclear provenances to India

Arts Council England and the Scottish Council on Archives warn of increased theft danger

After a troubled renovation, Paris museum unveils rehang and new exhibition programme with a contemporary twist

Project aims to create virtual archives using 3D scanning technology

But a visit to Ai Weiwei Royal Academy show is not on the agenda

Revamp of Musée de l’Homme will chart humanity’s story from prehistory to the present—and future

The massive Land Art project is a memorial to the Sicilian town of Gibellina, ruined by a 1968 earthquake

UK culture minister defers export licence for portrait of Catrina Hooghsaet

Marianne Boesky Gallery is showing key works he made as a young artist

The artist worked with her husband for nearly 50 years

Relations worse than ever after federal US judge imposes $43.7m fine over Jewish Orthodox library

A Post-Impressionist perspective makes our world a more exciting place

From one room in Fleet St to an international network

Zaha Hadid, Renzo Piano and David Adjaye get involved as donors step in to fill the funding gap

Rediscovered Japanese panels on show after two years of painstaking restoration in specialist studio