Why hasn't US attacked?

The United States (US) is only hesitating  in colonizing the Islamic Republic of Iran, because of its concern of the massive cost that it will surely suffer for doing so. Please click on this link for more: https://youtu.be/JxYg3LGInyE

The US' pretext for its war is to stop Iran from building a nuclear bomb. This is ridiculous, and that is why Iran is willing to negotiate the US' elimination of its illegal economic sanctions on them for only that. 

The US knows that the consequences to the world's economy will be enormous with the Russian Federation and the People's Republic of China joining forces to prevent Iran's colonization, and to uphold international law. That economic chaos, and not the cost of human lives that will be lost for US imperialism, is the only thing that is causing the US to hesitate in attacking Iran.

The US, for the past 128 years, has been willing to consistently refuse to comply with 43 United Nations resolutions demanding the immediate return of Puerto Rico's sovereignty to the Puerto Ricans. 6 million Puerto Ricans have abandoned their national territory (gentrification), and almost half of the 3 million people in Puerto Rico live in poverty. Bad Bunny's Super Bowl Halftime Show was about that!

And, the US has been willing to allow almost 40 million of its own citizens to live in poverty too, and another 201 million more to live from paycheck to paycheck, so that 9 of the 10 richest men in the world could be Americans. Therefore, Secretary of State Marco Rubio lied at the Munich Security Conference when he said that, "We can no longer place the so-called global order above the vital interest of our people."

The US' vital interest is its oligarchy!