21.   That would counter the threat before it materializes.

22.   The best way to counter this threat will no doubt be a subject of intense debate.

23.   The Fed repeatedly raised interest rates last year to counter the threat of inflation.

24.   The Hawk missile system is a medium-range air defense system designed to counter threats from aircraft and cruise missiles.

25.   The possibility of an electronic Pearl Harbor has sparked a debate on how to counter the threat.

26.   The project is working to counter the threat to sea horses from habitat destruction, exploitation as curios and, in particular, overfishing for traditional Chinese medicine.

27.   The Russians have suggested that diplomacy and controls on missile technology should be the primary tools in countering missile threats.

28.   The United States is perilously close to committing itself, by treaty, to vast dislocations of its economy to counter a threat that may not exist.

29.   These potential threats must be countered, among other factors, by a battle-ready army.

30.   This, in turn, raises the question of using ground forces to counter that threat.