Nobel Peace Prize vs. Trump

Disclaimer
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I saw news regarding President Trump expressing dissatisfaction over not being awarded the Nobel Peace Prize.
In the war with Iran... there was an incident where a school was bombed, resulting in the deaths of many students. As the person responsible for the war... it seems like a disqualifying factor for the Nobel Peace Prize.
Even if his subsequent achievements are outstanding... it feels like awarding President Trump the prize would be unreasonable.
However, if he can prevent a world war... it might be worth considering awarding him the Nobel Prize.
Because it is a better outcome than the extinction of humanity through nuclear war, right?
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