My first attempt at an answer would be the breadth and depth of the meddling involved.
That being said, could you provide examples as to how the Middle East has reacted to meddling as opposed to South East Asia?
Look at Thailand, a land with many masters over the millennia, India, china, British, Japan. Yet there is only a certain faction involved in terrorism there, their society at large doesn't feel the need to engage in antiwestern terrorism.