21.   But the United States and South Korea have refused to sign it, saying the weapon serves as a deterrent to a possible North Korean invasion.

22.   Egyptian, Syrian and Saudi heads of government to discuss possible Gaza invasion, US-Saudi meeting.

23.   GROZNY, Chechnya -- Volunteers sign up to defend the breakaway republic from a possible Russian invasion aimed at stopping a civil war.

24.   Hardened by repeated periods of tension with Iraq since the Gulf War, Kuwaitis showed few signs of panic Friday over another possible invasion by their bigger neighbor.

25.   He said he believed the aircraft could have been scouting possible invasion routes.

26.   In addition, workers are facing more stress and possible invasion of privacy by employers checking on their e-mails or the Internet sites they have visited.

27.   It was reported during the war that Baghdad also had planted land mines in southern Iraq as its first line of defense against possible invasion by the coalition forces.

28.   Pentagon officials have said tens of thousands of mines placed along the Korean border are essential to defending against a possible invasion from the communist north.

29.   President John F. Kennedy, after weighing a possible invasion, instead began a naval blockade.

30.   She also called for a national draft to build up the military against a possible invasion from Asia.