31.   President Vladimir Putin of Russia acknowledged that there might soon be a need to counter nuclear threats from unpredictable powers like North Korea.

32.   References to the nuclear threat were frequent and sometimes explicit.

33.   Projects at Rutgers include plans to retrofit weather stations for real-time alerts to biochemical or nuclear threats.

34.   Rice wrote that nuclear threats from Iraq and North Korea must be the primary concern of US leaders.

35.   Reducing the nuclear threat.

36.   Second, if we are to reduce the nuclear threat, we need to raise public awareness and inspire leadership and cooperation around the world.

37.   That reassessment could also examine the nuclear threat that the system would deter.

38.   The Cold War was hot and life under the nuclear threat was sober.

39.   The national security team has worked hard to reduce the nuclear threat to the United States from Russia and the newly independent states of the former Soviet Union.

40.   The nuclear threat shaded popular culture in ways reflected in our language, music, books and film.