American officials say it is essential to prevent a return to power by the group.

Palestinian security officials said they would try to prevent any violence by the group.

He had no right to prevent a divorce by one of his children.

He then set the ship on fire to prevent her use by the enemy.

This was to prevent damage by the heads being left on the media.

He moved to prevent obstruction of the new policy by the state security forces.

So it makes sense to prevent that by trading with someone who also has too much of something else.

"These are international waters and nobody can prevent us by fear from being there."

Irish security forces continue to be used to try to prevent attacks by such groups.

The structure must be intact to prevent access by other means.