Some Scenarios from the WTC Attack

What could be some of the (disturbing) subsequent scenarios after the attack and whatever the US response is ?

• Lower tolerance for Arabs / Islamic and probably, generally all foreigners from developing countries in the US.  I am not using the word "racism" here but it is quite likely that there would be more incidents of mistrust and attack against foreigners in the US.
• If the US were to attack Afghanistan, a stepped up "jehad" by the extremists.  Would there also be a War between nations ? 
• A heightened polarisation in the world polity --- and something not as simple to understand as the US-USSR Cold War.  There could be increasing divisions between "peace-loving", "democratic" countries on the one hand and "fundamentalist", "rogue" nations on the other.  Religion would frequently be used as a criterion in the division.
• The recognition that "low-intensity conflict"  (ie as practised by terrorists) can never be totally eliminated and is, actually, extremely difficult to prevent or avoid.
• It is quite unlikely that any "military strike" (or even the capture and trial of those responsible) would actually prevent the possibility of future attacks.  A "military strike" would not eliminate the terrorists.  A War might take away a major support base of terrorism if the War also results in change in governments and political structures (democracy and the removal of fundamentalists from positions of authority) --- but a War would have many more implications going beyond eliminating a terrorist organisation.
• More budgets and effort on "security"  -- whether it is airports, public utilities or corporates.  This will also cause greater inconvenience to individuals accessing such facilities.  Hopefully, this will spur investments in non-invasive screening.
• There will be increased efforts to reduce the dependence on oil as a source of energy. 

In the immediate term (the next 3 months) there is a possibility -- ever so slight -- that increased efforts (War efforts ?) by the US could actually spur economic growth.  Consumer confidence could be replaced by Government action as the chief driver in the economy.