The Chabad organisation wants the Schneerson Library (in Russia)  and has gotten a US court to order the Russians to hand it over. Russia says no, so the Chabad has threatened (in not quite so many words) to go to courts and impound Russian state museum loans to the US. So that means the Russians have stopped the loans and are really unhappy about the US.

Strange that stuff going into the US is so unsafe from US government stealing – such as your laptops and the data thereon…

Dispute Over Jewish Archive Derails Russian Art Loans to U.S. – NYTimes.com.