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 began intercepting Japanese radio transmissions, which indicated the two forces were very close to each other. We found out later that we were moving in opposite directions and passed each other by 32 miles.”
“The purpose of the United Nations should be to protect the essential sovereignty of nations, large and small.”