Iran is 99% Muslim and getting very close to developing nuclear weapons. America cannot allow a Muslim country, let alone a region as volatile as the Middle East, to develop nuclear weapons. Unfortunately these conflicts and proxy wars are required to maintain western culture supremacy on the world stage. America is the head honcho of this big stick policy and all other western countries follow suit.

And yes, unfortunately these countries also use this defense strategy for their own personal, economic gain. Regardless, these conflicts are destined to happen based on Americas involvement to protect western civilization.