I will.
In Canadian foreign policy history, Wilfrid Laurier, in 1910, talked about Canadian defence policy. What he said, in essence, was that there was no threat, and if there were one, the Americans would save us, so we didn't need any armed forces.
That was changed by Paul Martin, Sr., at the end of the Second World War. He said that Canada had an appetite to play a strong role in the world and that we had the teeth to go with it. And we did.
That has all withered away, so that we're now in the position of, “There is no threat, and maybe the Americans will save us”; and the same for Europe.