Declare war against the nation of terrorism, and attack terrorist cells whatever country they may be located in. Any countries that don't want attacks falling within their territory would be advised not to be hosts to these islands of that nation.
Dennis Prager has suggested a response to terrorism: Donate large sums of money to Israel every time an act of terror is carried out against the United States. Every time an Arab or Palestinian group attacks the US, it makes Israel stronger.
Ditto that. We are at war. It now has a face. Everyone in the US and the world by the end of the day will watch the video of the World Trade Centers collapsing.
Mr. Bin Laden, Mr. Arafat, other terrorists:
MENE, MENE, TEKEL, PARSIN