Anyone upset with Trump about this, well maybe you should have insisted the deal go through Congress instead of Obama doing it just himself. That's the problem with the chief executive going it alone, it means it can be undone by any future chief executive.
The deal was terrible but unfortunately, the damage is already done at this point. Too much money to be made for the European powers to pull out and without them, sanctions by just the US won't amount to much, not to mention, the money was already released to Iran. Basically you can't put the cat back in the bag. Future generations will have to live with the consequences of this deal regardless of what Trump does now.....all he will succeed in doing is making it easier to blame him for the inevitable.
Trump did the right thing. Iran can pound sand. Some libtards are still crying about oil prices and potential war. Iran has the economy of Maryland. Having nuclear weapons and the ability to use them or transport them are two different things.