Norm Eisen, the U.S. ambassador to the Czech Republic, poses at his official residence in Prague in October 2013. Eisen's mother was born and raised in what was Czechoslovakia and was sent by the Nazis to the Auschwitz concentration camp, which she survived. Filip Singer/The Washington Post/Getty Images hide caption

itoggle caption Filip Singer/The Washington Post/Getty Images

A picture of former Czech President Vaclav Havel lay among candles and floral tributes as people gathered in Prague on Thursday to honor him. Odd Andersen /AFP/Getty Images hide caption

itoggle caption Odd Andersen /AFP/Getty Images