21.  But police have taken into custody others believed to have helped Amir plot the assassination or who at least knew Amir was planning such an attack.

22.  But trial lawyers often say such an attack on the main opposition witness can be an advantage even if it is not thoroughly persuasive.

23.  Coast Guard commanders consider such an attack highly unlikely.

24.  Diplomats fear such an attack could force Serbia to intervene.

25.  Even though these officials believed such an attack was highly unlikely, they said senior military officers have been involved in all of the planning this week.

26.  Fearing that such an attack might occur on Monday, the police arrested the suspects.

27.  For months, the rebels had held drills simulating such an attack, practicing how they would kill their hostages if the troops came in, Gumucio said.

28.  For years, they have been training for such an attack.

29.  Glick asked whether there had been such an attack.

30.  He had been held for a month recently in prison in Ramallah, on suspicion that he was about to carry out such an attack.