battle over 1800 paintings attributed to russian modernist masters intensifies after litigation funder raises authenticity concerns

A legal battle over a collection of 1,800 paintings attributed to Russian modernist masters has escalated after the litigation funder backing the claimants, LitFin, raised concerns it may have been misled about the works' authenticity. The funder is now in a dispute with the claimants, the family of the late Palestinian collector Uthman Khatib, over halted payments and control of the lawsuits, which seek the return of the paintings or $323 million from Israeli-Russian businessman Mozes Frisch, who is accused of stealing them.