What is Iran’s axis of resistance?

.AMERICA SAYS THAT its own troops in Syria and Iraq have been struck a minimum of 55 times since Hamas’s attack on Israel on Oct 7th. Blaming Iran as well as its substitutes across the Middle East, it has been hitting back: on November 12th United States launched its 3rd set of air raid in eastern Syria because late Oct. Iran’s proxies possess so far stopped short of launching attacks that can grab United States in to full-scale battle.

But their firepower poses a clear threat to United States and also its allies. What is this self-proclaimed center of protection, and also just how highly effective is it?