21.   Rather than looking at external threats, Joseph Nye, the dean of the John F. Kennedy School of Government, said the biggest problems might come from within.

22.   The fall of the Soviet state removed the external threat of Communism and its atheistic doctrine.

23.   The external threat is competition.

24.   The law reflects how, for national security officials, terrorism has replaced Communism as most important external threat.

25.   There is no external threat like Greece was facing.

26.   There is something uniquely American in the idea of responding to external threats by shopping.

27.   They will talk about defending their borders against external threats and defending the country against internal enemies.

28.   Tokyo can continue to rely on Washington for protection from external threats while expanding its own participation in United Nations and other international peacekeeping operations.

29.   Today the main external threats are from Iran, Iraq and Syria.

30.   We face no external threat and refuse really to address the huge internal problems that haunt us, like race or a cultural and moral breakdown in our society.