A historic painting that Angelina Jolie and Brad Pitt bought during their marriage is expected to fetch between $2.1 million and $3.4 million at auction next month. Christie’s will sell the landscape, painted by then-British Prime Minister Winston Churchill, as part of a modern British art event on March 1. Amateur painter Churchill gave the piece, called “Tower of the Koutoubia Mosque,” to President Franklin D. Roosevelt as a souvenir of their time together attending the Casablanca Conference, then visiting nearby Marrakech, in January 1943. It was there that the two world leaders discussed their plan to defeat the Nazis in World War II. Churchill produced an estimated 500 paintings, but this is the only one he did during the war years.