Czar Nicholas II and his family were brutally murdered by the communist Bolsheviks. Trump knows that his entire livelihood, his family, and everything he has built for himself is on the line. He will not lose.
https://en.wikipedia.org/wiki/Execution_of_the_Romanov_family
This is one of the few things that makes me think he's going head-on with the beast. Failure is not an option.