One of the main art databases, the Art Loss Register, has issued certificates for works looted or subject to recovery claims

Destruction of artefacts in Syria and Iraq is a pressing issue but UK remains only major power not to ratify international law

Authorities claim that Kapoor organised global trade in stolen Asian antiquities, casting doubt on some of his gifts to international museums

Gagosian Gallery and six Hollywood execs in months of negotiations to use images of Superman, Iron Man and Spiderman <br>

State’s House of Representatives urges Fred Jones Jr Museum of Art to step up its provenance research

Poaching leads Willis to get injunction and accuse JLT of conspiracy

Sale of more than 2,000 works from Helge Achenbach's company expected to fetch between €3m and €4.5m

Artyom Loskutov was jailed by Siberian police after organising a May Day counter-march

Panel of federal judges say 5% resale royalty law can only apply to works sold within California

Legal conference tackles issues facing US museums, from commissioning work to developing diversity

Three lawsuits allege that a storage facility company, a subsidiary of Christie’s, failed to take proper precautions, despite urgent warnings

Work commissioned under Percent for Art causes controversy as the public and politicians across the US criticise the scheme

New law would dilute powers of the “commissaires-priseurs” system and give responsibility to non-experts

Yves Bouvier is reportedly to be replaced by a group of independent directors

Ruling in France over work by Courbet may have influenced change in “community standards”

Appellate Court upholds First Amendment rights but encourages stricter privacy laws in future

Ambitious joint venture between New York and Havana at risk&nbsp;as State Department&nbsp;remains unwilling to grant immunity from seizure for Cuban loans

Statute of limitations does not apply in Goudstikker heirs’ claim against Norton Simon Museum, ruling finds<br>