With regard to Daneil,I thought it strange that an official of a conquered nation would become an official in the conquering nation. However, I remembered the end of World War II.
Germany was working feverishly with V-1 and V-2 buzz bombs and rockets. They were advanced their capability at that time, so advanced that, had the war gone on another year, it could have ended differently. There was keen competition between the Soviet Union and the United States to see who could secure the best in technology.
The U.S. was successful in persuading Dr. Werner von Braun to come to this country.
His research contributed greatly to the United States’ efforts to develop rockets for space travel and get to the moon first. However the process worked, Darius did a similar thing in bringing Daniel into his government.