Don't blame Trump. Blame Hussein Obama, Sen Corker and McConnell. They bypassed the Treaty Clause which made this Iran turd a "deal", not an enforceable Treaty.
They didn’t believe she could lose. Still, they determined they could afford insurance.
I blame Obama and his fabulist Ben Rhodes most of all. Corker and McConnell could not have stopped it even if they wanted to. Obama was going to do the deal regardless. The buck stops with him.