In this photo taken on Thursday, March 16, 2017, Georgy Nissky's "En Route," left, is on display in the Institute of Russian Realist Art, a private museum in Moscow, Russia. A sale of Soviet-era masterpieces at auction in London in 2014, one selling for $2 million, has triggered a criminal investigation in Russia and a push to re-nationalize the collection that once belonged to a Soviet artists' trade union. (AP Photo/Alexander Zemlianichenko)