11.   Such research is crucial to combating natural infectious diseases and developing improved defenses against bioterrorism.

12.   The Clinton administration and Congress are in agreement about the need to develop ballistic missile defenses in Asia.

13.   The Clinton administration has worked hard in recent years to develop such defenses.

14.   The impulse to develop a defense against such threats is reasonable.

15.   The Pentagon is developing national defenses against missiles, but at a slower pace than Republicans want.

16.   The Pentagon is developing national defenses, but at a slower pace than Congress wants.

17.   The strategic problems in the fight against terrorism are monumental, according to analysts and officials, leaving policymakers virtually crippled in developing a defense.

18.   The United States, the review maintains, should develop missile defenses.

19.   Their main prey species have evolved with them, and so have developed formidable defenses.

20.   There are some good arguments for developing antimissile defenses, free from existing treaty constraints, and some bad ones.