Translation of "terror" into English

Et quomodo non memoremus insidias contra vitam, quas terroris inferendi usus struit, qui etiam in gradu internationali invaluit?

And how can one fail to mention the attacks against human life by terrorism, organized even on an international scale?

Sed terror hominibus mentem consiliumque eripit et membra debilitat; ut tum accidit.

But fear often deprives men of intellect and counsel, and weakens their strength, as happened upon this occasion.