Violence continues to haunt eastern europe. the attempted assassina-tion of Slovak Prime Minister Robert Fico on May 15 inevitably conjures up the memory of the assassination of Archduke Franz Ferdinand in Sarajevo 110 years earlier, which led to the First World War. It is, tragically, not an exaggeration to say that Europe (and crucially, this time, the United States) again faces a fateful choice: between a negotiated settlement in Ukraine and the possibility of a third, and perhaps final, world war.