He believed it was necessary to have cooperation and support from the international community:
"...not only do we seek the terrorists, but we also hold the governments that harbor them and feed them and house them and hide them, accountable for their behavior as well
Letters in congratulations & treasure.
The Immigration and Naturalization Act of 1965, also known as the Hart-Celler Act, abolished an earlier quota system based on national origin and established a new immigration policy based on reuniting immigrant families and attracting skilled labor to the United States
He was a success in terms of the military, but a failure in terms of ideology and politics.
I believe it's A: capitalizing on the harsh post-war conditions in their countries.