JUST as some people are endlessly fascinated by the question of who killed President John F Kennedy, the murder of the Romanovs, the family of Tsar Nicholas II, the last Tsar of Russia, in 1918, evokes an interest bordering on obsession.

• 正如是谁杀死约翰·肯尼迪总统的问题不断强烈地吸引一些人一样，1918年俄国最后一位沙皇尼古拉二世所属的罗曼诺夫家族谋杀案也使一些人几近着迷。