Mexican Flag raised over US Post Office

[Duke of Gloucester]

You can't make blanket generalizations on the effects of using force based on one such example.

You can't, but if it is any help the last time the UK used military force because a "foreign" flag was flying over a post office, although, eventually the flag was removed, it did lead to the loss of territory a few years later.

I prefer Seamus Heaney's father's advice on watching a Nationalist parade: "Don't get involved in that son. You can't eat a flag."

Edit: Actually it was John Hume's father.