Polish Threat to NG

In a vague TV report BBC London News says that the recent spraying of red paint on two of Nicholas Poussin's paintings in the National Gallery (CLICK) has prompted a Polish Museum to threaten to withhold a Leonardo painting from NT's Autumn blockbuster Leonardo da Vinci: Painter at the Court of Milan unless security is improved. It took me only a few minutes of research to find out that the museum in question is the Czartoryski Museum in Krakow, the painting it doesn't want to send to London is Lady with an Ermine and the paint spraying is an excuse. Polish conservation experts have been going bananas over this loan, because the painting on a wooden panel is so fragile it could be irreparably damaged in transit. They've been arguing against the loan since last year (title link). NG's problem is that its advert for the show uses this painting (CLICK).