The statement that accurately differentiates between a world issue currently affecting U.S. foreign policy and a world issue that affected U.S. foreign policy in the past is:
Weapons of mass destruction currently affect U.S. foreign policy, while terrorism affected U.S. foreign policy in the past.
This statement reflects ongoing concerns about weapons of mass destruction, especially in relation to countries like North Korea and Iran, and contrasts it with the emphasis on terrorism, which was particularly prominent in U.S. foreign policy following the events of September 11, 2001.