Who would succeed Nicholas II?

Who would succeed Nicholas II in a surviving Imperial Russia?

His son Alexei is the expected heir, but his youth and hemophilia could require a regency or prevent him from surviving to rule.

Alexei Nikolaevich is the expected successor to Nicholas II. Born in 1904, he would be a child or young teenager during the immediate postwar years and could not govern independently. His hemophilia creates a serious risk that he dies before inheriting or cannot sustain the duties of the throne. A regency would therefore become as important as the formal line of succession. The dynasty survives the revolution only to retain a potentially destabilizing biological and constitutional problem.