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
President Trump is the opposite of Tsar Nicholas II. Trump represents a meritocracy of strong people in pursuit of peace above all else. Nicholas was an autocrat by accident of birth, a small weak man unfit for the great role he inherited. The Last Tsar threw away the lives of his subjects by the millions in pursuit of imperial glory. His own family were the final victims of his sheer incompetence.
Yet he would face a similar fate because communists are evil.