According to Jen Kreder, something got lost in translation by the time the article hit the press.  Although Kreder cannot comment on the merits of the claim, she said that it is particularly surprising that no one on the Italian side, which had knowledge of the claim, seems to have insisted that the museum apply for immunity from seizure, which is not available after the object is in the U.S.  Before this incident, Professor Kreder published the following article in the Washington University Law Review discussing the prior Wally, Benningson/Alsdorf Picasso and Jullian Fallat seizures, which may be of interest to readers:  http://lawreview.wustl.edu/commentaries/executive-weapons-to-combat-infections-of-the-art-market/.