article_snippet.sent: U.S. Ambassador Stephen Mull attends ceremonies marking the 72nd anniversary of the Warsaw Ghetto Uprising, in front of the monument to the Heroes of the Ghetto, in Warsaw, Poland, on Sunday, April 19, 2015 .
article_snippet.sent: On Sunday, the U.S. ambassador to Poland, Stephen Mull, was called to the Foreign Ministry in a formal act of protest on the 72nd anniversary of the Warsaw Ghetto Uprisingthe Warsaw Ghetto Uprising.
highlights_snippet.sent: The U.S. ambassador to Poland, Stephen Mull, was called to the Foreign Ministry in a formal act of protest .
  