SE-Asia forgotten in the War on Terror[ism]?

It seems that the US and Britain have forgotten se-Asia in their plans to eradicate terrorism. Why is this? Some of the most popular Islamic extremist groups are located in this area. Jemaah Islamiyah continues to fight for a united Islamic state in the region, particularly Indonesia, Singapore, Brunei, Malaysia, and the south of Thailand and the Philippines, as well as the northern parts of Australia.

Is the US still afraid of se-asia, after Vietnam, or is because the region hasn't enough oil? Why is action not been taken?

Should Australia go it alone and take out the rubbish (so to say)?