I'm not Greg, but I'm answering anyway. I'm never shy with my opinions
And going back a bit, what do you think caused this threat in the first place? Do you think US doreign policy played any role in it?
Well the original threat comes from the fact that fundamentalist religion is not compatible with other religions, so Fundamentalist Islam is already at odds with countrys who have, say, Christianity as their main religion.
However, in the shorter term I think the tensions were started by the creation of the state of Israel (don't get me started on that) and further aggravated by several Western governments meddling in the affairs of the Middle East. There's nothing more aggravating for a country than having another country messing in your internal affairs. America is lucky that it's never really had that problem, and perhaps if some other countries had meddled with US domestic policy then the USA would be a little more reluctant to do the same to other countries.*
Let me tell you a story that may be of relevance to illustrate my point.
About 6 years ago, just before I went to uni, I spent a summer in the middle east travelling around and visiting the different countries.
While I was there I saw a lot of people with stickers on their cars/bikes showing the American or British flag in flames, and I also encountered a fair bit of hostility from people on the street.
However,
every time I actually stopped to talk to people they quickly grew very friendly when I mentioned I was Swedish and not American/British. They'd quite happily talk away to me with no problems at all, even when I mentioned I came from a Christian country.
When I asked why they disliked these other countries so much their response was always along the lines of "they think they know what is best for us" or "they treat us with arrogance". That is what annoys the common man on the street, most of them don't give two hoots about the differing religion.
That's not to say that there isn't a minority who does want to destroy anything non-islamic: There will always be people who want that, and we must watch them carefully.
My point is merely that the foreign policy of many western countries is what annoys many Muslims, and as soon as you start getting people who are aggreived with the West then you can persuade them that the West needs to be attacked, it becomes a breeding ground for discontent.
With a little thought and a lot of work I really think we could change a fair bit of the current hostile climate. Get the foreign policy sorted out and treat them as equals and not as third world hellholes.
*Although, of course, the USA isn't the only one doing the meddling. The UK and France are even worse for it. France only escapes the attention of fundamentalist Islam because the government has (vaguely) friendly relations with a lot of countries in the M.E, something that a lot of other places don't.
(edit) That was a little longer than expected. Good luck reading it
