So that was said to Margaret Thatcher not by Margaret Thatcher?
yes
The IRA claimed responsibility the next day, and said that it would try again. Its statement read:
Mrs. Thatcher will now realise that Britain cannot occupy our country and torture our prisoners and shoot our people in their own streets and get away with it. Today we were unlucky, but remember we only have to be lucky once. You will have to be lucky always. Give Ireland peace and there will be no more war.
So that was said to Margaret Thatcher not by Margaret Thatcher?
yes