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This year’s TEFAF Art Symposium looked at an old but not unproblematic relationship

An early Mondrian hidden among Old Masters; Auerbach’s striking self-portrait; and a curious Collector’s Cabinet

Fire at the Battersea Arts Centre; Why ‘avant-garde’ is a slippery term; and what’s wrong with the BBC’s Big Painting Challenge

The term ‘avant-garde’ has shifted meaning from its military roots to the byword for artistic innovation. How should we apply it to art history?

There are fashions in conservation just as in any other aesthetic practice

The iconoclasm of the Islamic State; highlights from TEFAF; the many sides of Paul Durand-Ruel; Britain’s top art school graduates; and the latest museum acquisitions

By mid September, the same show will have toured three cities, in three countries, and will have picked up three different titles along the way

View Festival of Art History; the Christie’s purchase of Collectrium; Mark Scala on Telling Tales

And will traditional art industry divides persist online?

London’s love of Victorian art; Gavin Stamp on the Garden Bridge; Matilda Bathurst reports from the Whitworth Art Gallery

Hiroshi Sugimoto on fossils and photos; In praise of postcards; The unlikely success of Fig-2; Five highlights from the Wadsworth; Tàpies in focus

Curator Patricia Hickson selects some personal highlights

Previews from the new February issue: Is the golden age of art schools over? What can be done to protect cultural property in war zones? Does art still have a sense of mystery?

It’s not just Paolozzi’s mosaics that have come under threat in recent years. Is it time for a public catalogue of such items?

From biplanes to drones, we look at the impact of the aerial viewpoint on modern and contemporary art. Plus, our round-up of this month’s major acquisitions