Anatole Shagalov must pay Sotheby's $2m for Keith Haring painting, judge rules
Art dealer did not pay up for painting bought at auction in 2017
Shagalov sues Paul Kasmin Gallery over Stella ownership
The art dealer has been involved in a number of lawsuits, which allege he defaulted on purchases of art
Anatole Shagalov embroiled in legal cases that reveal problems of buying art with loans
Buyers using works as collateral and allegedly defaulting on payment becoming increasingly common in "frothy market"