He knew that due to US policies he would be charged with treason and found guilty. His only hope was that he could avoid extradition and not spend the rest of his life in a 10x10 wet hole in gitmo.
He should be pardoned and given the presidential medal of freedom.
"Today's robots are very primitive, capable of understanding only a few simple instructions such as 'go left', 'go right', and 'build car'." --John Sladek