As best I can tell there was no advance warning of the attack on the World Trade Center in 1993, which was the first significant foreign terrorist activity in the U.S. No tip-offs that it was coming.
“We've talked to the Europeans about it. It's clear if those negotiations fail, then we are agreed with the Europeans that the next step is to take the matter to the U.N. Security Council.”
“A habitual disuse of physical forces totally destroys the moral; and men lose at once the power of protecting themselves, and of discerning the cause of their oppression.”