11.   Modified theater defenses would not be the only way to create such a defense.

12.   On the conservative side of the political spectrum, which has long supported expansive national missile defenses, enthusiasm for theater defenses runs high.

13.   Other theater defenses have been specifically designed to work in the boost phase.

14.   Putin last summer offered to cooperate with the United States and European powers on theater missile defenses that could be brought to bear against any threatening nation.

15.   Some congressional Republicans want no curbs on the development of theater missile defenses, while others want to scrap the ABM treaty.

16.   The Aegis system could someday be adapted for use in the kind of naval theater missile defense which Bush supports but China vehemently opposes.

17.   The agreement allows Washington to proceed with all theater missile defenses under development.

18.   The agreement does ban the testing of theater missile defenses against strategic missiles.

19.   The ABM treaty permits theater missile defenses.

20.   The Chinese are particularly upset about theater missile defense because it would give the United States the ability to detect and destroy Chinese missiles as they were launched.