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Is it the job of the United States to restrain foreign countries?
Yes. That's the short answer.
Is it the job of other countries as well? What if China and Russia decided that it was their job to restrain the United States? With the implied intention of using nuclear weapons if necessary (an assumption which underlies all US foreign policy). Would you be ok with that?
What if China and Russia decided to go to war, or to join up and go to war against one of their neighbors? Would it be the United State's job to restrain China and/or Russia? Why? What if they don't want our restraining? Then what?
The long answer is: yes, so long as the particularly intimate relationship that exists between the US and Israel persists, so long as the US continues to be one of the pillars of the Israeli economy, and so long as the US remains a unipolar superpower.
So basically, as long as the US remains in the business of being world policeman and giving/selling weapons to Israel, then we should be best buds?
What if another country becomes a unipolar superpower and a bunch of Cubans are allowed to immigrate there. What if, over time, the unipolar superpower developed an intimate relationship with Cuba, since it has so many citizens of Cuban ancestry, and the superpower starts supplying Cuba with weapons and economic aid? What if Cuba decided to attack its neighbors with said weapons and then Cuba's superpower friend covered Cuba's aggression through UN Vetos? Would you be OK with that? After all, Cuba and the super power have a "Special Relationship" built on the same things you mentioned.