The onset of violence in Iraq was brought about by our invading the country. So it is pointless to bring that up.
If you want me to complete the list, a la Wiki:
http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2009
http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2008
http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2007
[URL="http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2006"]http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2006[/URL]
http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2005
http://en.wikipedia.org/wiki/List_of_terrorist_incidents,_2004
and so on.
As per that list, a large number of such acts were in Iraq. Which I will exclude, like i said above, that country had insignificant terrorist acts before we invaded.
The other region is Pakistan. Which also saw a massive upsurge because of our forces in the neighboring country, pushing the Taliban into Pakistan.
Violence begets violence.
The remaining includes countries from all over the world, India, Sril Lanka, Chechnya, Greece, Phillipines, Ukraine, ,Spain, Israel and so on.
Feel free to go through the list.