Terrorism occurs when terror is spread and experienced by people. So both parties the terrorist and allied nations both throws terror on both sides thus they are all terrorist, the producer of terror.
No to the above bolded. Terrorism as we know it does not need a cause such as injustice. Terrorism is a part of the Islam scheme for world domination. Therefore if Islam exists, you will see terrorism without any cause except to promote the particular Islamic views of the terrorist.
I guess I have to agree with this, Terrorism is an actual tool for a major plot - world domination. Divide and conquer, if you may. By funding terrorism, people from one country will fight with one another, thus making it easier for terrorists to conquer the land.