In the early centuries of Islam, the great schools of Islamic jurisprudence were built upon the above principles. Basic to all their legal systems they developed the doctrine that liberty is the fundamental basis of law.
The doctrine of original sin claims that all men sinned in Adam; but whether they did or whether it is merely a fact that all men sin does not basically affect the problem of suffering.
So you're quite right that when... as the Cold War grew and expanded out of Europe, we ourselves had to take refuge behind the shield of the Monroe Doctrine.
We had, after all, no other recourse to protect ourselves, no other document, let's say, than the Monroe Doctrine. So that could be cited as a cause for intervention if and when it might become necessary.
The proposition that Muslims are welcome in Britain if, and only if, they stop behaving like Muslims is a doctrine which is incompatible with the principles that guide a free society.
They're after one world religion and one world government. That's why they've attacked the Catholic Church so strongly, to ultimately take control over it by their doctrine.
There are many who lust for the simple answers of doctrine or decree. They are on the left and right. They are not confined to a single part of the society. They are terrorists of the mind.