Islamic Law and Warfare: What does Islam really say about terrorism and warfare?

What does Islamic law really say about terrorism and warfare?
Many people do not know that Islam has strict laws regarding war and how the terrorist who claim to do something in the name of Islam twist the Qur'an and Sunnah to provoke war and try to justify their cruel and barbaric actions.
In this essay, Najia focuses on the Qur'an, Sunnah, fatwas and essays from Islamic scholars to show the reader that Islam does not support terrorism and the killing of people whether they are Muslim or non-Muslim.